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    Combined Muon Performance Public Results

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    Muon Journal Papers

    Full Title Journal Links Status Groups
     PUBLISHED  Muon reconstruction performance of the ATLAS detector in proton--proton collision data at $\sqrt{s}$=13 TeV EPJC Inspire, arXiv, Figures Eur. Phys. J. C 76 (2016) 292
    (Submitted: 2016/03/17)
    MUON
     PUBLISHED  Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data EPJC Inspire, arXiv, Figures Eur. Phys. J. C 74 (2014) 3130
    (Submitted: 2014/07/15)
    MUON
     PUBLISHED  Muon Reconstruction Efficiency and Momentum Resolution of the ATLAS Experiment in Proton-Proton Collisions at $\sqrt{s}$= 7 TeV in 2010 EPJC Inspire, arXiv, Figures Eur. Phys. J. C 74 (2014) 3034
    (Submitted: 2014/04/17)
    MUON
     PUBLISHED  Standalone Vertex Finding in the ATLAS Muon Spectrometer JINST Inspire, arXiv JINST 9 (2014) P02001
    (Submitted: 2013/11/28)
    MUON / EXOT
     PUBLISHED  Commissioning of the ATLAS Muon Spectrometer with Cosmic Rays EPJC Inspire, arXiv, Figures Eur. Phys. J. C 70 (2010) 875
    (Submitted: 2010/06/22)
    MUON
    Last updated: 2018-11-21, 17:14

     
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    Muon Conference Notes

     

    Full Title Ref Code Publication Date Groups
    Preliminary muon reconstruction efficiency and momentum resolution with the ATLAS detector during 2012 pp collisions. ATLAS-CONF-2013-088 2013/08/15 MUON
    Reconstruction of collinear Q√ED final state radiation photons in Z → μμ decays produced in s = 7 TeV proton-proton collisions ATLAS-CONF-2012-143 2012/11/06 MUON
    A measurement of the muon reconstruction efficiency in 2010 ATLAS data using jψ decays ATLAS-CONF-2012-125 2012/08/27 MUON
    Muon reconstruction efficiency in reprocessed 2010 LHC proton-proton collision data recorded with the ATLAS detector ATLAS-CONF-2011-063 2011/04/18 MUON
    ATLAS Muon Momentum Resolution in the First Pass Reconstruction of the 2010 p-p Collision Data at √s=7 TeV ATLAS-CONF-2011-046 2011/03/22 MUON
    A measurement of the ATLAS muon reconstruction and trigger efficiency using J/ψ decays in p-p collisions at √s=7 TeV ATLAS-CONF-2011-021 2011/03/12 MUON
    Determination of the muon reconstruction efficiency in ATLAS at the Z resonance in proton-proton collisions at √s=7 TeV ATLAS-CONF-2011-008 2011/02/16 MUON
    Di-muon composition in ATLAS at 7 TeV ATLAS-CONF-2011-003 2011/02/07 MUON
    Extraction of the prompt muon component in inclusive muons produced at sqrts = 7 TeV ATLAS-CONF-2010-075 2010/07/21 MUON
    Muon Reconstruction Performance ATLAS-CONF-2010-064 2010/07/23 MUON
    Observation of W→lnu and Z→ll production in proton-proton collisions at √s = 7 TeV with the ATLAS detector ATLAS-CONF-2010-044 2010/06/03 STDM / EGAM / JETM / MUON
    Muon Performance in Minimum Bias pp Collision Data at √=7 TeV with ATLAS ATLAS-CONF-2010-036 2010/06/07 MUON
    Preliminary studies for the measurement of the inclusive muon spectrum in pp collisions at √s=7 TeV with the ATLAS detector ATLAS-CONF-2010-035 2010/06/06 MUON
    Identification of muon candidates in pp collisions at √s=900 GeV with the ATLAS Detector ATLAS-CONF-2010-015 2010/03/26 MUON
    Number of ConfNotes: 14

    Last updated: 2018-11-21, 17:14

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    * Identification of muon candidates in pp collisions at √s=900 GeV with the ATLAS detector
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    Revision 412013-07-11 - GiacomoArtoni

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    Revision 392013-04-18 - MassimoCorradi

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    Preliminary Figures from 2012 Collision Data at 8 TeV

    Muon efficiency and muon momentum resolution in 2012 data

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    Preliminary Figures from 2011 Collision Data at 7 TeV

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      MCP Mass Performance plots - HCP dataset 2012
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    Preliminary Figures from 2011 Collision Data at 7 TeV

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      Muon efficiency and muon momentum resolution in 2012 data
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    MCP Mass Performance plots - HCP dataset 2012

     

    Preliminary Figures from 2011 Collision Data at 7 TeV

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    List of CONF Notes

     
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    Full Title Ref Code Publication Date Groups
    Preliminary muon reconstruction efficiency and momentum resolution with the ATLAS detector during 2012 pp collisions. ATLAS-CONF-2013-088 2013/08/15 MUON
    Reconstruction of collinear Q√ED final state radiation photons in Z → μμ decays produced in s = 7 TeV proton-proton collisions ATLAS-CONF-2012-143 2012/11/06 MUON
    A measurement of the muon reconstruction efficiency in 2010 ATLAS data using jψ decays ATLAS-CONF-2012-125 2012/08/27 MUON
    Muon reconstruction efficiency in reprocessed 2010 LHC proton-proton collision data recorded with the ATLAS detector ATLAS-CONF-2011-063 2011/04/18 MUON
    ATLAS Muon Momentum Resolution in the First Pass Reconstruction of the 2010 p-p Collision Data at √s=7 TeV ATLAS-CONF-2011-046 2011/03/22 MUON
    A measurement of the ATLAS muon reconstruction and trigger efficiency using J/ψ decays in p-p collisions at √s=7 TeV ATLAS-CONF-2011-021 2011/03/12 MUON
    Determination of the muon reconstruction efficiency in ATLAS at the Z resonance in proton-proton collisions at √s=7 TeV ATLAS-CONF-2011-008 2011/02/16 MUON
    Di-muon composition in ATLAS at 7 TeV ATLAS-CONF-2011-003 2011/02/07 MUON
    Extraction of the prompt muon component in inclusive muons produced at sqrts = 7 TeV ATLAS-CONF-2010-075 2010/07/21 MUON
    Muon Reconstruction Performance ATLAS-CONF-2010-064 2010/07/23 MUON
    Observation of W→lnu and Z→ll production in proton-proton collisions at √s = 7 TeV with the ATLAS detector ATLAS-CONF-2010-044 2010/06/03 STDM / EGAM / JETM / MUON
    Muon Performance in Minimum Bias pp Collision Data at √=7 TeV with ATLAS ATLAS-CONF-2010-036 2010/06/07 MUON
    Preliminary studies for the measurement of the inclusive muon spectrum in pp collisions at √s=7 TeV with the ATLAS detector ATLAS-CONF-2010-035 2010/06/06 MUON
    Identification of muon candidates in pp collisions at √s=900 GeV with the ATLAS Detector ATLAS-CONF-2010-015 2010/03/26 MUON
    Number of ConfNotes: 14

    Last updated: 2018-11-21, 17:14

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    Preliminary Figures from 2012 Collision Data at 8 TeV

    Revision 352012-06-13 - OliverKortner

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    Preliminary Figures from 2012 Collision Data at 8 TeV

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    Preliminary Figures from 2011 Collision Data at 7 TeV

    <!-- Page with muon isolation plots for 2011 pp Collision Data 

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    Preliminary Figures from 2010 Collision Data at 7 TeV

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    Preliminary reconstruction efficiency measurement at low transverse momentum with tag and probe at the J/Psi peak - full 2010 data set
     

    Di-muon invariant mass resolution in Z->µµ decays at 7 TeV

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    Revision 312011-11-17 - OliverKortner

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    Preliminary Figures from 2011 Collision Data at 7 TeV

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    Muon isolation plots

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    Di-muon invariant mass resolution in Z->µµ decays at 7 TeV

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    Revision 302011-05-31 - OliverKortner

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    Preliminary Figures from 2011 Collision Data at 7 TeV

    Di-muon invariant mass resolution in Z->µµ decays at 7 TeV

    Invariant mass resolution for combined muons with 205 pb-1
    • Di-muon invariant mass distribution for oppositely charged muon pairs with transverse momentum above 20 GeV and calorimeter isolation (sum of calorimeter cell energies <2 GeV in a cone of ΔR=0.3.).
    • Both muons are restricted to |eta|<2.5.
    • Collision events are selected from event filter triggers of 20 GeV threshold.
    • The momentum vector is jointly reconstructed in the muon spectrometer and the inner tracking detector (“combined muon”).
    • The measured di-muon mass is compared to Monte Carlo prediction using Pythia generated Z->µµ events.
    Z Dimuon Resolution

    SVG (Scalable Vector Graphics) eps file

    Dimuon mass resolution of combined muons in different pseudorapidity regions.
    The experimental resolution is compared to Monte Carl predictions using Pythia generated Z->μ&mu events.
    Z Dimuon Resolution

    SVG (Scalable Vector Graphics) eps file
    Dimuon mass resolution of the inner detector in different pseudorapidity regions.
    The experimental resolution is compared to Monte Carl predictions using Pythia generated Z->μ&mu events.

    The differences between the experimental and predicted resolutions are caused by the residual misalignment of the inner detector.

    Z Dimuon Resolution

    SVG (Scalable Vector Graphics) eps file
    Dimuon mass resolution of the muon spectrometer in different pseudorapidity regions.
    The experimental resolution is compared to Monte Carl predictions using Pythia generated Z->μ&mu events.

    The differences between the experimental and predicted resolutions are caused by missing inert material in the Monte-Carlo simulation.

    Z Dimuon Resolution

    SVG (Scalable Vector Graphics) eps file

    Muon reconstruction efficiencies dertermined Z->μμ decays at 7 TeV

    Inner detector muon efficiency
    Measured inner detector muon reconstruction efficiency for two sets of hit requirements for muons with pT>20 GeV as a function of the muon's pseudorapidity.
    Efficiency

    SVG (Scalable Vector Graphics) eps file

    Inner detector muon efficiency applying ID hit requirements
    Measured inner detector muon reconstruction efficiency for two sets of hit requirements for muons with pT>20 GeV as a function of the muon's pseudorapidity. The efficiency dips at η~0 and |η|~1.2 are caused by hit requirements imposed on the reconstructed muon.
    Efficiencies

    SVG (Scalable Vector Graphics) eps file
    Combined muon efficiency for chain 1
    Combined muon reconstruction efficiency with respect to the inner tracking efficiency as a function of the pseudorapidity of the muon for muons with pT > 20 GeV. The panel at the bottom shows the ratio between the measured and predicted efficiencies.
    Efficiencies

    SVG (Scalable Vector Graphics) eps file
    Combined muon efficiency for chain 2
    Combined muon reconstruction efficiency with respect to the inner tracking efficiency as a function of the pseudorapidity of the muon for muons with pT > 20 GeV. The panel at the bottom shows the ratio between the measured and predicted efficiencies.
    Efficiencies

    SVG (Scalable Vector Graphics) eps file
    Combined plus segment tagged muon efficiency for chain 1
    Combined muon reconstruction efficiency with respect to the inner tracking efficiency as a function of the pseudorapidity of the muon for muons with pT > 20 GeV. The panel at the bottom shows the ratio between the measured and predicted efficiencies.
    Efficiencies

    SVG (Scalable Vector Graphics) eps file
    Combined plus segment tagged muon efficiency for chain 2
    Combined muon reconstruction efficiency with respect to the inner tracking efficiency as a function of the pseudorapidity of the muon for muons with pT > 20 GeV. The panel at the bottom shows the ratio between the measured and predicted efficiencies.
    Efficiencies

    SVG (Scalable Vector Graphics) eps file
     

    Preliminary Figures from 2010 Collision Data at 7 TeV

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    Revision 272011-03-20 - WolfgangLiebig

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    Preliminary Figures from 2010 Collision Data at 7 TeV

    Revision 262011-02-19 - WolfgangLiebig

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    Added:
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    Preliminary Figures from 2010 Collision Data at 7 TeV

    Revision 252011-02-07 - WolfgangLiebig

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    Preliminary Figures from 2010 Collision Data at 7 TeV

    Revision 242011-01-18 - OliverKortner

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    Projected improvement to the invariant mass resolution with the November data reprocessing
    >
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    Improvement to the invariant mass resolution with the November data reprocessing
     
    • Di-muon invariant mass distribution for oppositely charged muon pairs with transverse momentum above 20 GeV and the above track isolation.
    • The momentum vector is jointly reconstructed in the muon spectrometer and the inner tracking detector.
    Changed:
    <
    <
    • The measured di-muon mass is shown for the first 6 pb-1 of 2010 pp data, for which the data is available in the original as well as the reprocessed version.
    >
    >
    • The measured di-muon mass is shown for the full pp data of 2010 in first-pass reconstruction using preliminary calibration and alignment constants and after the reprocessing of the data with improved calibration and alignment constants.
      The distribution is compared to MC prediction using Pythia-generated Z->µµ events and reconstructed with the same software version as the original data processing.
    Changed:
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    <
    Reprocessing improvement to Z->mumu resolution

    SVG (Scalable Vector Graphics) eps file
    >
    >
    Reprocessing improvement to Z->mumu resolution

    SVG (Scalable Vector Graphics) eps file
    Improvement to the invariant mass resolution with the November data reprocessing
    • Dimuon event selection like above.
    • The muon momenta are measured by the inner detector only.
    Reprocessing improvement to Z->mumu resolution

    SVG (Scalable Vector Graphics) eps file
    Improvement to the invariant mass resolution with the November data reprocessing
    • Dimuon event selection like above.
    • The muon momenta are measured by the muon spectrometer only and corrected for the energy loss of the muons in the calorimeter.
    Reprocessing improvement to Z->mumu resolution

    SVG (Scalable Vector Graphics) eps file
     
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    META FILEATTACHMENT attachment="DimuonRes_ID_42.png" attr="h" comment="" date="1290343147" name="DimuonRes_ID_42.png" path="DimuonRes_ID_42.png" size="25678" stream="DimuonRes_ID_42.png" tmpFilename="/usr/tmp/CGItemp42390" user="liebig" version="1"
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    Revision 232010-12-06 - PatrickJussel

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    Combined Muon Performance Public Results

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    Run 141749 event 133538
    Event display of a collision with two muon candidates in the end-cap.
    Changed:
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    <
    A full track fit has been successfully applied to the combined InnerDetector - MuonSpectrometer trajectory of both candidates.
    >
    >
    A full track fit has been successfully applied to the combined Atlas.InnerDetector - Atlas.MuonSpectrometer trajectory of both candidates.
     
    run141749 event133538

    Revision 222010-11-21 - WolfgangLiebig

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    Di-muon invariant mass resolution in Z->µµ decays at 7 TeV

    Changed:
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    <
    Invariant mass resolution for combined muons with 42/pb
    Work in progress, under construction
    >
    >
    Invariant mass resolution for combined muons with 42pb-1
    • Di-muon invariant mass distribution for oppositely charged muon pairs with transverse momentum above 20 GeV and a track isolation (sum of the transverse momenta of the tracks in a cone of (∆Phi)2+(∆eta)2<(0.4)2 around the muon is less than 20% of the muon's).
    • Both muons are restricted to |eta|<1.05.
    • Collision events are selected from event filter triggers of 10, and with higher luminosity 13 GeV threshold.
    • The momentum vector is jointly reconstructed in the muon spectrometer and the inner tracking detector (“combined muon”).
    • The measured di-muon mass is compared to Monte Carlo prediction using Pythia-generated Z->µµ events.
     
    Z Dimuon Resolution

    SVG (Scalable Vector Graphics) eps file
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    Invariant mass resolution for muons measured with the Inner Detector
    Changed:
    <
    <
    Work in progress, under construction
    >
    >
    • Di-muon invariant mass distribution for oppositely charged muon pairs with transverse momentum above 20 GeV and a track isolation (sum of the transverse momenta of the tracks in a cone of (∆Phi)2+(∆eta)2<(0.4)2 around the muon is less than 20% of the muon's).
    • Both muons are restricted to |eta|<1.05.
    • Collision events are selected from event filter triggers of 10, and with higher luminosity 13 GeV threshold.
    • The momentum vector is reconstructed by the inner tracking detector after it was identified as combined muon.
    • The measured di-muon mass is compared to Monte Carlo prediction using Pythia-generated Z->µµ events.
     
    Z

    SVG (Scalable Vector Graphics) eps file
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    Invariant mass resolution for muons measured only with the Muon Spectrometer
    Changed:
    <
    <
    Work in progress, under construction
    >
    >
    • Di-muon invariant mass distribution for oppositely charged muon pairs with transverse momentum above 20 GeV and a track isolation (sum of the transverse momenta of the tracks in a cone of (∆Phi)2+(∆eta)2<(0.4)2 around the muon is less than 20% of the muon's).
    • Both muons are restricted to |eta|<1.05.
    • Collision events are selected from event filter triggers of 10, and with higher luminosity 13 GeV threshold.
    • The momentum vector is reconstructed by the muon spectrometer and extrapolated to the collision primary vertex after it was identified as combined muon.
    • The measured di-muon mass is compared to Monte Carlo prediction using Pythia-generated Z->µµ events.
     
    Z Dimuon Resolution with the Muon Spectrometer

    SVG (Scalable Vector Graphics) eps file
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    Projected improvement to the invariant mass resolution with the November data reprocessing
    Changed:
    <
    <
    Work in progress, under construction
    >
    >
    • Di-muon invariant mass distribution for oppositely charged muon pairs with transverse momentum above 20 GeV and the above track isolation.
    • The momentum vector is jointly reconstructed in the muon spectrometer and the inner tracking detector.
    • The measured di-muon mass is shown for the first 6 pb-1 of 2010 pp data, for which the data is available in the original as well as the reprocessed version. The distribution is compared to MC prediction using Pythia-generated Z->µµ events and reconstructed with the same software version as the original data processing.
     
    Reprocessing improvement to Z->mumu resolution

    SVG (Scalable Vector Graphics) eps file

    Revision 212010-11-21 - WolfgangLiebig

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    Preliminary Figures from 2010 Collision Data at 7 TeV

    Added:
    >
    >

    Di-muon invariant mass resolution in Z->µµ decays at 7 TeV

    Invariant mass resolution for combined muons with 42/pb
    Work in progress, under construction
    Z Dimuon Resolution

    SVG (Scalable Vector Graphics) eps file
    Invariant mass resolution for muons measured with the Inner Detector
    Work in progress, under construction
    Z

    SVG (Scalable Vector Graphics) eps file
    Invariant mass resolution for muons measured only with the Muon Spectrometer
    Work in progress, under construction
    Z Dimuon Resolution with the Muon Spectrometer

    SVG (Scalable Vector Graphics) eps file
    Projected improvement to the invariant mass resolution with the November data reprocessing
    Work in progress, under construction
    Reprocessing improvement to Z->mumu resolution

    SVG (Scalable Vector Graphics) eps file

     

    Di-muon invariant mass distribution for 40.0pb-1 at 7 TeV

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    META FILEATTACHMENT attachment="Dimuon_mass_3000.eps" attr="h" comment="raw di-muon spectrum for integrated lumi of 3.0/pb" date="1286621418" name="Dimuon_mass_3000.eps" path="Dimuon_mass_3000.eps" size="40276" stream="Dimuon_mass_3000.eps" tmpFilename="/usr/tmp/CGItemp4759" user="liebig" version="1"
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    META FILEATTACHMENT attachment="Dimuon_mass_40000.png" attr="h" comment="" date="1289836983" name="Dimuon_mass_40000.png" path="Dimuon_mass_40000.png" size="22123" stream="Dimuon_mass_40000.png" tmpFilename="/usr/tmp/CGItemp42668" user="liebig" version="1"
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    META FILEATTACHMENT attachment="DimuonRes_ID_42.eps" attr="h" comment="" date="1290343126" name="DimuonRes_ID_42.eps" path="DimuonRes_ID_42.eps" size="23353" stream="DimuonRes_ID_42.eps" tmpFilename="/usr/tmp/CGItemp42431" user="liebig" version="1"
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    Revision 202010-11-15 - WolfgangLiebig

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    Preliminary Figures from 2010 Collision Data at 7 TeV

    Changed:
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    <

    Di-muon invariant mass distribution for 3.0pb-1 at 7 TeV

    >
    >

    Di-muon invariant mass distribution for 40.0pb-1 at 7 TeV

     
    Di-muon invariant mass spectrum
    Changed:
    <
    <
    Di-muon invariant mass spectrum for data, from fully combined opposite sign muons in L1_MU6 triggered events. The muon trigger applies a p_T threshold at ~6GeV, while the two inner detector-muon spectrometer combined tracks have a p_T threshold of 4 and 2.5 GeV respectively. The plot shown corresponds to an integrated luminosity of about 3.0 pb−1.
    phi

    SVG (Scalable Vector Graphics) eps file
    >
    >
    Di-muon invariant mass spectrum for data, from fully combined opposite sign muons in EF_MU15 triggered events. The muon Event Filter trigger applies a pT threshold at ~15GeV, which for consistency is reconfirmed offline for one of the two inner detector-muon spectrometer combined tracks (the other one is required to pass a p_T threshold of 2.5 GeV). The plot shown corresponds to an integrated luminosity of about 40 pb−1.
    Differences to the previous plots arise mainly from the use of a high trigger threshold and from plotting the event density in each bin.
    phi

    SVG (Scalable Vector Graphics) eps file
     

    Changed:
    <
    <

    Di-muon invariant mass distribution for 0.9pb-1 at 7 TeV

    >
    >

    Di-muon invariant mass distribution for 3.0pb-1 at 7 TeV

     
    Di-muon invariant mass spectrum
    Di-muon invariant mass spectrum for data, from fully combined opposite sign muons in L1_MU6 triggered events. The muon trigger applies a p_T threshold at ~6GeV, while the two inner detector-muon spectrometer combined tracks have a p_T threshold of 4 and 2.5 GeV respectively.
    Changed:
    <
    <
    The plot shown corresponds to an integrated luminosity of about 0.9 pb−1.
    phi

    SVG (Scalable Vector Graphics) eps file
    >
    >
    The plot shown corresponds to an integrated luminosity of about 3.0 pb−1.
    phi

    SVG (Scalable Vector Graphics) eps file
     

    Line: 58 to 59
     
    Di-muon invariant mass spectrum
    Di-muon invariant mass spectrum for data, from fully combined opposite sign muons in L1_MU6 triggered events. The muon trigger applies a p_T threshold at ~6GeV, while the inner detector-muon spectrometer combined tracks have an effective p_T threshold of ~4GeV in the barrel, which decreases at high pseudo-rapidity. No explicit selection on muon p_T is applied. The plot shown corresponds to an integrated luminosity of 330 nb−1.
    Changed:
    <
    <
    Plot prepared for and presented at ICHEP 2010. Kept for reference. For more recent talks please use the 0.9 pb−1 distribution.
    >
    >
    Plot prepared for and presented at ICHEP 2010. Kept for reference. For more recent talks please use the 3.0 pb−1 distribution.
     
    phi

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    META FILEATTACHMENT attachment="Dimuon_mass_3000.eps" attr="h" comment="raw di-muon spectrum for integrated lumi of 3.0/pb" date="1286621418" name="Dimuon_mass_3000.eps" path="Dimuon_mass_3000.eps" size="40276" stream="Dimuon_mass_3000.eps" tmpFilename="/usr/tmp/CGItemp4759" user="liebig" version="1"
    Added:
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    META FILEATTACHMENT attachment="Dimuon_mass_40000.eps" attr="h" comment="" date="1289836965" name="Dimuon_mass_40000.eps" path="Dimuon_mass_40000.eps" size="136387" stream="Dimuon_mass_40000.eps" tmpFilename="/usr/tmp/CGItemp42769" user="liebig" version="1"
    META FILEATTACHMENT attachment="Dimuon_mass_40000.png" attr="h" comment="" date="1289836983" name="Dimuon_mass_40000.png" path="Dimuon_mass_40000.png" size="22123" stream="Dimuon_mass_40000.png" tmpFilename="/usr/tmp/CGItemp42668" user="liebig" version="1"

    Revision 192010-10-09 - WolfgangLiebig

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    Preliminary Figures from 2010 Collision Data at 7 TeV

    Added:
    >
    >

    Di-muon invariant mass distribution for 3.0pb-1 at 7 TeV

    Di-muon invariant mass spectrum
    Di-muon invariant mass spectrum for data, from fully combined opposite sign muons in L1_MU6 triggered events. The muon trigger applies a p_T threshold at ~6GeV, while the two inner detector-muon spectrometer combined tracks have a p_T threshold of 4 and 2.5 GeV respectively. The plot shown corresponds to an integrated luminosity of about 3.0 pb−1.
    phi

    SVG (Scalable Vector Graphics) eps file

     

    Di-muon invariant mass distribution for 0.9pb-1 at 7 TeV

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    META FILEATTACHMENT attachment="Dimuon_mass.png" attr="" comment="" date="1279910310" name="Dimuon_mass.png" path="Dimuon_mass.png" size="17173" stream="Dimuon_mass.png" tmpFilename="/usr/tmp/CGItemp43798" user="orestano" version="1"
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    Added:
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    META FILEATTACHMENT attachment="Dimuon_mass_3000.png" attr="h" comment="" date="1286621318" name="Dimuon_mass_3000.png" path="Dimuon_mass_3000.png" size="34353" stream="Dimuon_mass_3000.png" tmpFilename="/usr/tmp/CGItemp4846" user="liebig" version="1"
    META FILEATTACHMENT attachment="Dimuon_mass_3000.eps" attr="h" comment="raw di-muon spectrum for integrated lumi of 3.0/pb" date="1286621418" name="Dimuon_mass_3000.eps" path="Dimuon_mass_3000.eps" size="40276" stream="Dimuon_mass_3000.eps" tmpFilename="/usr/tmp/CGItemp4759" user="liebig" version="1"

    Revision 182010-08-24 - DomiziaOrestano

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    Preliminary Figures from 2010 Collision Data at 7 TeV

    Added:
    >
    >

    Di-muon invariant mass distribution for 0.9pb-1 at 7 TeV

    Di-muon invariant mass spectrum
    Di-muon invariant mass spectrum for data, from fully combined opposite sign muons in L1_MU6 triggered events. The muon trigger applies a p_T threshold at ~6GeV, while the two inner detector-muon spectrometer combined tracks have a p_T threshold of 4 and 2.5 GeV respectively. The plot shown corresponds to an integrated luminosity of about 0.9 pb−1.
    phi

    SVG (Scalable Vector Graphics) eps file

     

    Di-muon invariant mass distribution for 330nb-1 at 7 TeV

    Di-muon invariant mass spectrum
    Di-muon invariant mass spectrum for data, from fully combined opposite sign muons in L1_MU6 triggered events. The muon trigger applies a p_T threshold at ~6GeV, while the inner detector-muon spectrometer combined tracks have an effective p_T threshold of ~4GeV in the barrel, which decreases at high pseudo-rapidity. No explicit selection on muon p_T is applied. The plot shown corresponds to an integrated luminosity of 330 nb−1.
    Added:
    >
    >
    Plot prepared for and presented at ICHEP 2010. Kept for reference. For more recent talks please use the 0.9 pb−1 distribution.
     
    phi

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    Added:
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    >
    META FILEATTACHMENT attachment="Dimuon_mass_896.eps" attr="" comment="" date="1282647200" name="Dimuon_mass_896.eps" path="Dimuon_mass_896.eps" size="52005" stream="Dimuon_mass_896.eps" tmpFilename="/usr/tmp/CGItemp18516" user="orestano" version="1"
    META FILEATTACHMENT attachment="Dimuon_mass_896.png" attr="" comment="" date="1282647217" name="Dimuon_mass_896.png" path="Dimuon_mass_896.png" size="17334" stream="Dimuon_mass_896.png" tmpFilename="/usr/tmp/CGItemp18593" user="orestano" version="1"

    Revision 172010-07-23 - DomiziaOrestano

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    Added:
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    >
     

    Preliminary Figures from 2010 Collision Data at 7 TeV

    Added:
    >
    >

    Di-muon invariant mass distribution for 330nb-1 at 7 TeV

    Di-muon invariant mass spectrum
    Di-muon invariant mass spectrum for data, from fully combined opposite sign muons in L1_MU6 triggered events. The muon trigger applies a p_T threshold at ~6GeV, while the inner detector-muon spectrometer combined tracks have an effective p_T threshold of ~4GeV in the barrel, which decreases at high pseudo-rapidity. No explicit selection on muon p_T is applied. The plot shown corresponds to an integrated luminosity of 330 nb−1.
    phi

    SVG (Scalable Vector Graphics) eps file

     

    Di-muon invariant mass distribution for 320µb-1 at 7 TeV

    Di-muon invariant mass distribution for 320µb-1 at 7 TeV using minimum bias trigger
    Line: 166 to 180
     
    META FILEATTACHMENT attachment="ptMuonsPPt.gif" attr="" comment="" date="1269357684" name="ptMuonsPPt.gif" path="ptMuonsPPt.gif" size="12243" stream="ptMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp41931" user="orestano" version="2"
    META FILEATTACHMENT attachment="DimuonMassOppSignApril2010.eps" attr="h" comment="" date="1273098842" name="DimuonMassOppSignApril2010.eps" path="DimuonMassOppSignApril2010.eps" size="12370" stream="DimuonMassOppSignApril2010.eps" tmpFilename="/usr/tmp/CGItemp41098" user="liebig" version="1"
    META FILEATTACHMENT attachment="DimuonMassOppSignApril2010.png" attr="h" comment="" date="1273098870" name="DimuonMassOppSignApril2010.png" path="DimuonMassOppSignApril2010.png" size="18761" stream="DimuonMassOppSignApril2010.png" tmpFilename="/usr/tmp/CGItemp41123" user="liebig" version="1"
    Added:
    >
    >
    META FILEATTACHMENT attachment="Dimuon_mass.eps" attr="h" comment="" date="1279910288" name="Dimuon_mass.eps" path="Dimuon_mass.eps" size="45403" stream="Dimuon_mass.eps" tmpFilename="/usr/tmp/CGItemp43746" user="orestano" version="1"
    META FILEATTACHMENT attachment="Dimuon_mass.png" attr="" comment="" date="1279910310" name="Dimuon_mass.png" path="Dimuon_mass.png" size="17173" stream="Dimuon_mass.png" tmpFilename="/usr/tmp/CGItemp43798" user="orestano" version="1"

    Revision 162010-06-07 - DomiziaOrestano

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    Added:
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    >
     

    Preliminary Figures from 2010 Collision Data at 7 TeV

    Revision 152010-06-06 - DomiziaOrestano

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    List of CONF Notes

    Added:
    >
    >
     

    Preliminary Figures from 2010 Collision Data at 7 TeV

    Revision 142010-05-11 - DomiziaOrestano

    Line: 1 to 1
     
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    Di-muon invariant mass distribution for 320µb-1 at 7 TeV

    Di-muon invariant mass distribution for 320µb-1 at 7 TeV using minimum bias trigger
    Changed:
    <
    <
    • Di-muon invariant mass distribution for oppositely charged muon pairs with a momentum above 3 GeV each: calculated from inner detector track parameters after fit to a common vertex.
    >
    >
    • Di-muon invariant mass distribution for oppositely charged muon pairs with an energy above 3 GeV each: calculated from inner detector track parameters after fit to a common vertex.
     
    • At least one muon must be jointly reconstructed in the muon spectrometer and the inner tracking detector (“combined muon”).
    • The fit to the distribution is an unbinned maximum likelihood fit, using event-by-event errors calculated for each di-muon:
      Gaussian-mean mass: 3.06±0.02 GeV

    Revision 122010-05-06 - WolfgangLiebig

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
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    Di-muon invariant mass distribution for 320µb-1 at 7 TeV

    Changed:
    <
    <
    Di-muon invariant mass distribution for 320µb-1 at 7 TeV
    >
    >
    Di-muon invariant mass distribution for 320µb-1 at 7 TeV using minimum bias trigger
     
    • Di-muon invariant mass distribution for oppositely charged muon pairs with a momentum above 3 GeV each: calculated from inner detector track parameters after fit to a common vertex.
    • At least one muon must be jointly reconstructed in the muon spectrometer and the inner tracking detector (“combined muon”).
    Deleted:
    <
    <
    • The data represent 320 μb-1 of stable-beam 7 TeV collision data using only the minimum bias trigger.
     
    • The fit to the distribution is an unbinned maximum likelihood fit, using event-by-event errors calculated for each di-muon:
      Gaussian-mean mass: 3.06±0.02 GeV
      Resolution: 0.08±0.02 GeV

    Revision 112010-05-06 - WolfgangLiebig

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
    Warning
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    -->

    Combined Muon Performance Public Results

    Changed:
    <
    <
    <!--optional-->

    Introduction

    * In this page you can find a section that collects the links to the Muon Combined Performance ATLAS CONF Notes, as well as the sections that collects the approved plots.

    >
    >
    <!--optional:  -->
    This page presents public results about the combined performance for muons in the ATLAS detector. The most recent results come first. This pages has three sections:
     

    List of CONF Notes

    Changed:
    <
    <
    >
    >
     
    Changed:
    <
    <

    Preliminary Figures from 2009 Collision Data at 900 GeV

    Figures for runs 141749 and 141811 (TOROID OFF)

    Blue led  The toroid magnets, which bend the muon tracks in the z projection, were OFF for runs 141749 and 141811, so the muons follow a straight path and the momentum is not measured in the spectrometer.
    Blue led  However, the acceptance is increased due to the fact that even very low momentum muons can traverse the spectrometer.
    Blue led  Cathode Strip Chambers are not yet included in the runs 141749 and 141811
    Blue led  *Event Selection and Data Sets*
    cut description
    Numbers of events passing
    runs 141749 and 14181
    Coincidence in MBTS (Min-bias trigger) and LAr timing 8k + 20k
    Good luminosity block and BCID per run
       Run 141749: LB 23-102
                            BCID:1, 899, 2674
       Run 141811: LB 126-165
    activity in the muon spectrometer
    2022
    ID Selection criteria
       P(ID) > 3 GeV
       at least 3 ID tracks with N(Pixel+SCT)>5
    124
    Combined and Standalone tracks with trigger chamber hits (RPC, TGC) 83
    >
    >

    Preliminary Figures from 2010 Collision Data at 7 TeV

     
    Changed:
    <
    <

    Event Display

    >
    >

    Di-muon invariant mass distribution for 320µb-1 at 7 TeV

     
    Changed:
    <
    <
    Run 141749 event 133538
    Event display of a collision with two muon candidates in the end-cap. A full track fit has been successfully applied to the combined InnerDetector - MuonSpectrometer trajectory of both candidates.
    run141749 event133538

    Track parameter distributions

    Azimuthal angle distribution for muon candidates
    The distribution is flat in Φ, as expected for collisions.

    SVG (Scalable Vector Graphics) eps file
    phi
    Pseudorapidity distribution for muon candidates
    Distribution peaked at large η, as expected for minimum bias p-p collisions

    SVG (Scalable Vector Graphics) eps file
    eta
    Impact parameters distribution for muon candidates
    The impact parameter of a track is defined as the (geometrically signed) closest distance in the plane transverse to the beam line. The expected width due to multiple scattering of 3 GeV momentum muons is about 200 mm - consistent with the measured value.

    SVG (Scalable Vector Graphics) eps file
    impact parameter
    >
    >
    Di-muon invariant mass distribution for 320µb-1 at 7 TeV
    • Di-muon invariant mass distribution for oppositely charged muon pairs with a momentum above 3 GeV each: calculated from inner detector track parameters after fit to a common vertex.
    • At least one muon must be jointly reconstructed in the muon spectrometer and the inner tracking detector (“combined muon”).
    • The data represent 320 μb-1 of stable-beam 7 TeV collision data using only the minimum bias trigger.
    • The fit to the distribution is an unbinned maximum likelihood fit, using event-by-event errors calculated for each di-muon:
      Gaussian-mean mass: 3.06±0.02 GeV
      Resolution: 0.08±0.02 GeV
      Number of signal events: 49±12
      Number of background events: 28±4
    • The mass region shown in the plot is fitted. Signal and background are computed in a mass range: 2.82-3.30GeV (3 σ around the peak).
    phi

    SVG (Scalable Vector Graphics) eps file
     
    Added:
    >
    >

    Preliminary Figures from 2009 Collision Data at 900 GeV

     

    Figures for runs 142171, 142174, 142189, 142191, 142193, 142195, 142383 (TOROID ON)

    Blue led  The Solenoid field was on. The Toroid field was raised to nominal value during run 142171.
    Line: 120 to 90
     
    momentum
    Added:
    >
    >

    Figures for runs 141749 and 141811 (TOROID OFF)

    Blue led  The toroid magnets, which bend the muon tracks in the z projection, were OFF for runs 141749 and 141811, so the muons follow a straight path and the momentum is not measured in the spectrometer.
    Blue led  However, the acceptance is increased due to the fact that even very low momentum muons can traverse the spectrometer.
    Blue led  Cathode Strip Chambers are not yet included in the runs 141749 and 141811
    Blue led  *Event Selection and Data Sets*
    cut description
    Numbers of events passing
    runs 141749 and 14181
    Coincidence in MBTS (Min-bias trigger) and LAr timing 8k + 20k
    Good luminosity block and BCID per run
       Run 141749: LB 23-102
                            BCID:1, 899, 2674
       Run 141811: LB 126-165
    activity in the muon spectrometer
    2022
    ID Selection criteria
       P(ID) > 3 GeV
       at least 3 ID tracks with N(Pixel+SCT)>5
    124
    Combined and Standalone tracks with trigger chamber hits (RPC, TGC) 83

    Event Display

    Run 141749 event 133538
    Event display of a collision with two muon candidates in the end-cap. A full track fit has been successfully applied to the combined InnerDetector - MuonSpectrometer trajectory of both candidates.
    run141749 event133538

    Track parameter distributions

    Azimuthal angle distribution for muon candidates
    The distribution is flat in Φ, as expected for collisions.

    SVG (Scalable Vector Graphics) eps file
    phi
    Pseudorapidity distribution for muon candidates
    Distribution peaked at large η, as expected for minimum bias p-p collisions

    SVG (Scalable Vector Graphics) eps file
    eta
    Impact parameters distribution for muon candidates
    The impact parameter of a track is defined as the (geometrically signed) closest distance in the plane transverse to the beam line. The expected width due to multiple scattering of 3 GeV momentum muons is about 200 mm - consistent with the measured value.

    SVG (Scalable Vector Graphics) eps file
    impact parameter
     
    Responsible: atlas-perf-muons-conveners@cernNOSPAMPLEASE.ch
    Last reviewed by: Never reviewed
    Line: 141 to 161
     
    META FILEATTACHMENT attachment="momentumMuonsPPt.gif" attr="" comment="" date="1269357607" name="momentumMuonsPPt.gif" path="momentumMuonsPPt.gif" size="13204" stream="momentumMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp41883" user="orestano" version="2"
    META FILEATTACHMENT attachment="ptMuonsPPt.eps" attr="" comment="" date="1269357651" name="ptMuonsPPt.eps" path="ptMuonsPPt.eps" size="10278" stream="ptMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp41944" user="orestano" version="2"
    META FILEATTACHMENT attachment="ptMuonsPPt.gif" attr="" comment="" date="1269357684" name="ptMuonsPPt.gif" path="ptMuonsPPt.gif" size="12243" stream="ptMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp41931" user="orestano" version="2"
    Added:
    >
    >
    META FILEATTACHMENT attachment="DimuonMassOppSignApril2010.eps" attr="h" comment="" date="1273098842" name="DimuonMassOppSignApril2010.eps" path="DimuonMassOppSignApril2010.eps" size="12370" stream="DimuonMassOppSignApril2010.eps" tmpFilename="/usr/tmp/CGItemp41098" user="liebig" version="1"
    META FILEATTACHMENT attachment="DimuonMassOppSignApril2010.png" attr="h" comment="" date="1273098870" name="DimuonMassOppSignApril2010.png" path="DimuonMassOppSignApril2010.png" size="18761" stream="DimuonMassOppSignApril2010.png" tmpFilename="/usr/tmp/CGItemp41123" user="liebig" version="1"

    Revision 102010-03-26 - DomiziaOrestano

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
    Warning
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    Line: 6 to 6
     
     
    • Set DENYTOPICVIEW =
    -->
    Changed:
    <
    <

    Combined Muon Performance Public Plots

    >
    >

    Combined Muon Performance Public Results

     
    <!--optional-->

    Introduction

    Changed:
    <
    <
    The combined muon performance plots below are approved to be shown by ATLAS speakers at conferences and similar events.
    >
    >
    * In this page you can find a section that collects the links to the Muon Combined Performance ATLAS CONF Notes, as well as the sections that collects the approved plots.
     
    Deleted:
    <
    <
    Please do not add figures on your own.
    Contact the the muon combined performance coordinators (atlas-perf-muons-conveners@cernNOSPAMPLEASE.ch) in case of questions and/or suggestions.
     
    Added:
    >
    >

    List of CONF Notes

     

    Preliminary Figures from 2009 Collision Data at 900 GeV

    Figures for runs 141749 and 141811 (TOROID OFF)

    Blue led 

    Revision 92010-03-23 - DomiziaOrestano

    Line: 1 to 1
     
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    META FILEATTACHMENT attachment="run141749etc_eta.eps" attr="h" comment="" date="1260562663" name="run141749etc_eta.eps" path="run141749etc_eta.eps" size="10902" stream="run141749etc_eta.eps" tmpFilename="/usr/tmp/CGItemp22351" user="liebig" version="1"
    META FILEATTACHMENT attachment="run141749etc_phi.eps" attr="h" comment="" date="1260562680" name="run141749etc_phi.eps" path="run141749etc_phi.eps" size="10938" stream="run141749etc_phi.eps" tmpFilename="/usr/tmp/CGItemp22275" user="liebig" version="1"
    META FILEATTACHMENT attachment="atlas2009-collision-vp1-141749-133538-2muons-web.png" attr="h" comment="" date="1260562735" name="atlas2009-collision-vp1-141749-133538-2muons-web.png" path="atlas2009-collision-vp1-141749-133538-2muons-web.png" size="1285127" stream="atlas2009-collision-vp1-141749-133538-2muons-web.png" tmpFilename="/usr/tmp/CGItemp22357" user="liebig" version="1"
    Changed:
    <
    <
    META FILEATTACHMENT attachment="etaMuonsPPt.eps" attr="h" comment="Muon candidates eta distribution in toroid on 900 GeV collisions" date="1266327008" name="etaMuonsPPt.eps" path="etaMuonsPPt.eps" size="10828" stream="etaMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp19577" user="orestano" version="1"
    META FILEATTACHMENT attachment="etaMuonsPPt.gif" attr="h" comment="Muon candidates eta distribution in toroid on 900 GeV collisions" date="1266327072" name="etaMuonsPPt.gif" path="etaMuonsPPt.gif" size="12861" stream="etaMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp19659" user="orestano" version="1"
    >
    >
    META FILEATTACHMENT attachment="etaMuonsPPt.eps" attr="" comment="" date="1269357464" name="etaMuonsPPt.eps" path="etaMuonsPPt.eps" size="10828" stream="etaMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp41960" user="orestano" version="2"
    META FILEATTACHMENT attachment="etaMuonsPPt.gif" attr="" comment="" date="1269357538" name="etaMuonsPPt.gif" path="etaMuonsPPt.gif" size="12861" stream="etaMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp42009" user="orestano" version="2"
     
    META FILEATTACHMENT attachment="phiMuonsPPt.gif" attr="h" comment="Muon candidates transverse momentum in toroid on 900 GeV collisions" date="1266327742" name="phiMuonsPPt.gif" path="phiMuonsPPt.gif" size="11735" stream="phiMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp19662" user="orestano" version="1"
    META FILEATTACHMENT attachment="phiMuonsPPt.eps" attr="h" comment="Muon candidates phi distribution in toproid on 900 GeV collisions" date="1266327213" name="phiMuonsPPt.eps" path="phiMuonsPPt.eps" size="10233" stream="phiMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp19677" user="orestano" version="1"
    Changed:
    <
    <
    META FILEATTACHMENT attachment="momentumMuonsPPt.eps" attr="h" comment="Muon candidates momentum in toroid on 900 GeV collisions" date="1266327546" name="momentumMuonsPPt.eps" path="momentumMuonsPPt.eps" size="10547" stream="momentumMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp19572" user="orestano" version="1"
    META FILEATTACHMENT attachment="momentumMuonsPPt.gif" attr="h" comment="Muon candidates momentum in toroid on 900 GeV collisions" date="1266327572" name="momentumMuonsPPt.gif" path="momentumMuonsPPt.gif" size="13367" stream="momentumMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp19696" user="orestano" version="1"
    META FILEATTACHMENT attachment="ptMuonsPPt.eps" attr="h" comment="Muon candidates transverse momentum in toroid on 900 GeV collisions" date="1266327626" name="ptMuonsPPt.eps" path="ptMuonsPPt.eps" size="10100" stream="ptMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp19716" user="orestano" version="1"
    META FILEATTACHMENT attachment="ptMuonsPPt.gif" attr="h" comment="Muon candidates transverse momentum in toroid on 900 GeV collisions" date="1266327668" name="ptMuonsPPt.gif" path="ptMuonsPPt.gif" size="12391" stream="ptMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp19622" user="orestano" version="1"
    >
    >
    META FILEATTACHMENT attachment="momentumMuonsPPt.eps" attr="" comment="" date="1269357576" name="momentumMuonsPPt.eps" path="momentumMuonsPPt.eps" size="10543" stream="momentumMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp41962" user="orestano" version="2"
    META FILEATTACHMENT attachment="momentumMuonsPPt.gif" attr="" comment="" date="1269357607" name="momentumMuonsPPt.gif" path="momentumMuonsPPt.gif" size="13204" stream="momentumMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp41883" user="orestano" version="2"
    META FILEATTACHMENT attachment="ptMuonsPPt.eps" attr="" comment="" date="1269357651" name="ptMuonsPPt.eps" path="ptMuonsPPt.eps" size="10278" stream="ptMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp41944" user="orestano" version="2"
    META FILEATTACHMENT attachment="ptMuonsPPt.gif" attr="" comment="" date="1269357684" name="ptMuonsPPt.gif" path="ptMuonsPPt.gif" size="12243" stream="ptMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp41931" user="orestano" version="2"

    Revision 82010-02-16 - WolfgangLiebig

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
    Warning
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    Line: 79 to 79
     
    Blue led  Collisions were selected considering only paired Bunch Crossing Identifiers and through the timing of MBTS or LAr
    Blue led 
    Changed:
    <
    <
    Only events with at least 3 tracks in Inner Detector, with at least 2 Pixel hits and 6 SCT hits,
    >
    >
    Only events with at least 3 tracks in Inner Detector, with at least 1 Pixel hits and 6 SCT hits,
      and with one track with p > 4 GeV, were considered
    Blue led  Tight cuts on the muon candidates were applied requesting a confirmation in the Inner Detector for all of them

    Revision 72010-02-16 - DomiziaOrestano

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
    Warning
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     impact parameter
    Changed:
    <
    <
    >
    >

    Figures for runs 142171, 142174, 142189, 142191, 142193, 142195, 142383 (TOROID ON)

    Blue led  The Solenoid field was on. The Toroid field was raised to nominal value during run 142171. As a consequence only the last Luminosity Blocks of that run are considered here.
    Blue led  The Luminosity Blocks used were obtained requesting safe beams from LHC and all the relevant detectors (MDTs, RPCs, TGCs, Pixels, SCT, TRT) to be operated at nominal HV. Also the level 1 central trigger processor and DAQ status were checked to be good.
    Blue led  Collisions were selected considering only paired Bunch Crossing Identifiers and through the timing of MBTS or LAr
    Blue led  Only events with at least 3 tracks in Inner Detector, with at least 2 Pixel hits and 6 SCT hits, and with one track with p > 4 GeV, were considered
    Blue led  Tight cuts on the muon candidates were applied requesting a confirmation in the Inner Detector for all of them
    Blue led  Results shown here are for the muon candidates with p > 4 GeV, pt > 2.5 GeV and abs(eta)<2.5 (50 candidates) and are compared to the non-diffractive Minimum bias MC normalized to the number of entries

    Parameter distributions in Data and Simulation

    Azimuthal angle distribution for muon candidates
    The anglular track parameter is measured by the Inner Detector.
    The distribution is flat in Φ, as expected for collisions.

    SVG (Scalable Vector Graphics) eps file
    phi
    Pseudorapidity distribution for muon candidates
    The pseudorapidity is measured by the Inner Detector.
    Distribution peaked at large η, as expected for minimum bias p-p collisions

    SVG (Scalable Vector Graphics) eps file
    eta
    transverse momentum distribution for muon candidates
    The transverse momentum is measured by the Inner Detector.


    SVG (Scalable Vector Graphics) eps file
    pt
    momentum distribution for muon candidates
    The momentum is measured by the Inner Detector.

    SVG (Scalable Vector Graphics) eps file
    momentum
     
    Responsible: atlas-perf-muons-conveners@cernNOSPAMPLEASE.ch
    Last reviewed by: Never reviewed

    Revision 62010-02-16 - DomiziaOrestano

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
    Warning
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    Line: 68 to 68
     impact parameter
    Changed:
    <
    <

    Figures for runs 142171, 142174, 142189, 142191, 142193, 142195, 142383 (TOROID ON)

    Blue led  The Solenoid field was on. The Toroid field was raised to nominal value during run 142171. As a consquence only the last Luminosity Blocks of that run are considered here.
    Blue led  The Luminosity Blocks used were obtained requesting safe beams from LHC and all the relevant detectors (MDTs, RPCs, TGCs, Pixels, SCT, TRT) to be operated at nominal HV. Also the level 1 central trigger processor and DAQ status were checked to be good.
    Blue led  Collisions were selected considering only paired Bunch Crossing Identifiers and through the timing of MBTS or LAr
    Blue led  Only events with at least 3 tracks in Inner Detector, with at least 2 Pixel hits and 6 SCT hits, and with one track with p > 4 GeV, were considered
    Blue led  Tight cuts on the muon candidates were applied requesting a confirmation in the Inner Detector for all of them
    Blue led  Results shown here are for the muon candidates with p > 4 GeV, pt > 2.5 GeV and abs(eta)<2.5 (50 candidates) and are compared to the non-diffractive Minimum bias MC normalized to the number of entries

    Parameter distributions in Data and Simulation

    Azimuthal angle distribution for muon candidates
    The anglular track parameter is measured by the Inner Detector.
    The distribution is flat in Φ, as expected for collisions.

    SVG (Scalable Vector Graphics) eps file
    phi
    Pseudorapidity distribution for muon candidates
    The pseudorapidity is measured by the Inner Detector.
    Distribution peaked at large η, as expected for minimum bias p-p collisions

    SVG (Scalable Vector Graphics) eps file
    eta
    transverse momentum distribution for muon candidates
    The transverse momentum is measured by the Inner Detector.


    SVG (Scalable Vector Graphics) eps file
    pt
    momentum distribution for muon candidates
    The momentum is measured by the Inner Detector.

    SVG (Scalable Vector Graphics) eps file
    momentum
    >
    >
     
    Responsible: atlas-perf-muons-conveners@cernNOSPAMPLEASE.ch
    Last reviewed by: Never reviewed

    Revision 52010-02-16 - WolfgangLiebig

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
    Warning
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    Line: 17 to 17
     

    Preliminary Figures from 2009 Collision Data at 900 GeV

    Changed:
    <
    <

    Detector conditions for runs 141749 and 141811 (TOROID OFF)

    Blue led  The toroid magnets, which bend the muon tracks in the z projection,
    >
    >

    Figures for runs 141749 and 141811 (TOROID OFF)

    Blue led  The toroid magnets, which bend the muon tracks in the z projection,
     were OFF for runs 141749 and 141811, so the muons follow a straight
    Changed:
    <
    <
    path and the momentum is not measured in the spectrometer.
    Blue led  However, the acceptance is increased due to the fact that even very low momentum muons can traverse the spectrometer.
    Blue led  Cathode Strip Chambers are not yet included in the runs 141749 and 141811
    Blue led  Event Selection and Data Sets
    >
    >
    path and the momentum is not measured in the spectrometer.
    Blue led  However, the acceptance is increased due to the fact that even very low momentum muons can traverse the spectrometer.
    Blue led  Cathode Strip Chambers are not yet included in the runs 141749 and 141811
    Blue led  *Event Selection and Data Sets*
     
    cut description
    Numbers of events passing
    runs 141749 and 14181
    Coincidence in MBTS (Min-bias trigger) and LAr timing 8k + 20k
    Good luminosity block and BCID per run
       Run 141749: LB 23-102
                            BCID:1, 899, 2674
       Run 141811: LB 126-165
    activity in the muon spectrometer
    2022
    ID Selection criteria
       P(ID) > 3 GeV
       at least 3 ID tracks with N(Pixel+SCT)>5
    124
    Combined and Standalone tracks with trigger chamber hits (RPC, TGC) 83
    Deleted: <
    <

    Figures for runs 141749 and 141811

     

    Event Display

    Line: 68 to 66 

    SVG (Scalable Vector Graphics)eps file
    impact parameter
    Changed: <
    <

    Detector conditions for runs 142171, 142174, 142189, 142191, 142193, 142195, 142383 (TOROID ON)

    Blue led  The Solenoid field was on. The Toroid field was raised to nominal value during run 142171. Only the last Luminosity Blocks of that run are considered here.

    Blue led  The Luminosity Blocks used were obtained requesting safe beams from LHC and all the relevant detectors (MDTs, RPCs, TGCs, Pixels, SCT, TRT) to be operated at nominal HV. Also the level 1 central trigger processor and DAQ status were checked to be good.

    Blue led  Collisions were selected considering only paired Bunch Crossing Identifiers and through the timing of MBTS or LAr

    Blue led  Only events with at least 3 tracks in Inner Detector, with at least 2 Pixel hits and 6 SCT hits, and with one track with p > 4 GeV, were considered

    Blue led  Tight cuts on the muon candidates were applied requesting a confirmation in the Inner Detector for all of them

    Blue led  Results shown here are for the muon candidates with p > 4 GeV, pt > 2.5 GeV and abs(eta)<2.5 (50 candidates) and are compared to the non-diffractive Minimum bias MC normalized to the number of entries
    >
    >
     Added: >
    >

    Figures for runs 142171, 142174, 142189, 142191, 142193, 142195, 142383 (TOROID ON)

    Blue led  The Solenoid field was on. The Toroid field was raised to nominal value during run 142171. As a consquence only the last Luminosity Blocks of that run are considered here.
    Blue led  The Luminosity Blocks used were obtained requesting safe beams from LHC and all the relevant detectors (MDTs, RPCs, TGCs, Pixels, SCT, TRT) to be operated at nominal HV. Also the level 1 central trigger processor and DAQ status were checked to be good.
    Blue led  Collisions were selected considering only paired Bunch Crossing Identifiers and through the timing of MBTS or LAr
    Blue led  Only events with at least 3 tracks in Inner Detector, with at least 2 Pixel hits and 6 SCT hits, and with one track with p > 4 GeV, were considered
    Blue led  Tight cuts on the muon candidates were applied requesting a confirmation in the Inner Detector for all of them
    Blue led  Results shown here are for the muon candidates with p > 4 GeV, pt > 2.5 GeV and abs(eta)<2.5 (50 candidates) and are compared to the non-diffractive Minimum bias MC normalized to the number of entries

    Parameter distributions in Data and Simulation

     
    Azimuthal angle distribution for muon candidates
    Added: >
    >The anglular track parameter is measured by the Inner Detector.
     The distribution is flat in Φ, as expected for collisions.

    SVG (Scalable Vector Graphics)eps file
    phi
    Pseudorapidity distribution for muon candidates
    Added: >
    >The pseudorapidity is measured by the Inner Detector.
     Distribution peaked at large η, as expected for minimum bias p-p collisions

    SVG (Scalable Vector Graphics)eps file
    eta
    transverse momentum distribution for muon candidates
    Added: >
    >The transverse momentum is measured by the Inner Detector.
     

    SVG (Scalable Vector Graphics)eps file
    pt
    momentum distribution for muon candidates
    Added: >
    >The momentum is measured by the Inner Detector. 

    SVG (Scalable Vector Graphics)eps file
    momentum
    Changed: <
    <
    >
    >
     
    Responsible: atlas-perf-muons-conveners@cernNOSPAMPLEASE.ch
    Last reviewed by: Never reviewed

    Revision 42010-02-16 - DomiziaOrestano

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
    Warning
    Can't INCLUDE Atlas.AtlasPublicTopic repeatedly, topic is already included.
    Line: 17 to 17
     

    Preliminary Figures from 2009 Collision Data at 900 GeV

    Changed:
    <
    <

    Detector conditions for runs 141749 and 141811

    >
    >

    Detector conditions for runs 141749 and 141811 (TOROID OFF)

     
    Blue led  The toroid magnets, which bend the muon tracks in the z projection, were OFF for runs 141749 and 141811, so the muons follow a straight
    Line: 36 to 36
     
    Combined and Standalone tracks with trigger chamber hits (RPC, TGC) 83
    Changed: <
    <

    Figures

    >
    >

    Figures for runs 141749 and 141811

     

    Event Display

    Line: 70 to 70  impact parameter
    Added: >
    >

    Detector conditions for runs 142171, 142174, 142189, 142191, 142193, 142195, 142383 (TOROID ON)

    Blue led  The Solenoid field was on. The Toroid field was raised to nominal value during run 142171. Only the last Luminosity Blocks of that run are considered here.

    Blue led  The Luminosity Blocks used were obtained requesting safe beams from LHC and all the relevant detectors (MDTs, RPCs, TGCs, Pixels, SCT, TRT) to be operated at nominal HV. Also the level 1 central trigger processor and DAQ status were checked to be good.

    Blue led  Collisions were selected considering only paired Bunch Crossing Identifiers and through the timing of MBTS or LAr

    Blue led  Only events with at least 3 tracks in Inner Detector, with at least 2 Pixel hits and 6 SCT hits, and with one track with p > 4 GeV, were considered

    Blue led  Tight cuts on the muon candidates were applied requesting a confirmation in the Inner Detector for all of them

    Blue led  Results shown here are for the muon candidates with p > 4 GeV, pt > 2.5 GeV and abs(eta)<2.5 (50 candidates) and are compared to the non-diffractive Minimum bias MC normalized to the number of entries

    Azimuthal angle distribution for muon candidates
    The distribution is flat in Φ, as expected for collisions.

    SVG (Scalable Vector Graphics) eps file phi
    Pseudorapidity distribution for muon candidates
    Distribution peaked at large η, as expected for minimum bias p-p collisions

    SVG (Scalable Vector Graphics) eps file eta
    transverse momentum distribution for muon candidates


    SVG (Scalable Vector Graphics) eps file pt
    momentum distribution for muon candidates


    SVG (Scalable Vector Graphics) eps file momentum

     
    Responsible: atlas-perf-muons-conveners@cernNOSPAMPLEASE.ch
    Last reviewed by: Never reviewedLine: 83 to 126 
    META FILEATTACHMENT attachment="run141749etc_eta.eps" attr="h" comment="" date="1260562663" name="run141749etc_eta.eps" path="run141749etc_eta.eps" size="10902" stream="run141749etc_eta.eps" tmpFilename="/usr/tmp/CGItemp22351" user="liebig" version="1"
    META FILEATTACHMENT attachment="run141749etc_phi.eps" attr="h" comment="" date="1260562680" name="run141749etc_phi.eps" path="run141749etc_phi.eps" size="10938" stream="run141749etc_phi.eps" tmpFilename="/usr/tmp/CGItemp22275" user="liebig" version="1"
    META FILEATTACHMENT attachment="atlas2009-collision-vp1-141749-133538-2muons-web.png" attr="h" comment="" date="1260562735" name="atlas2009-collision-vp1-141749-133538-2muons-web.png" path="atlas2009-collision-vp1-141749-133538-2muons-web.png" size="1285127" stream="atlas2009-collision-vp1-141749-133538-2muons-web.png" tmpFilename="/usr/tmp/CGItemp22357" user="liebig" version="1"
    Added: >
    >
    META FILEATTACHMENT attachment="etaMuonsPPt.eps" attr="h" comment="Muon candidates eta distribution in toroid on 900 GeV collisions" date="1266327008" name="etaMuonsPPt.eps" path="etaMuonsPPt.eps" size="10828" stream="etaMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp19577" user="orestano" version="1"
    META FILEATTACHMENT attachment="etaMuonsPPt.gif" attr="h" comment="Muon candidates eta distribution in toroid on 900 GeV collisions" date="1266327072" name="etaMuonsPPt.gif" path="etaMuonsPPt.gif" size="12861" stream="etaMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp19659" user="orestano" version="1"
    META FILEATTACHMENT attachment="phiMuonsPPt.gif" attr="h" comment="Muon candidates transverse momentum in toroid on 900 GeV collisions" date="1266327742" name="phiMuonsPPt.gif" path="phiMuonsPPt.gif" size="11735" stream="phiMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp19662" user="orestano" version="1"
    META FILEATTACHMENT attachment="phiMuonsPPt.eps" attr="h" comment="Muon candidates phi distribution in toproid on 900 GeV collisions" date="1266327213" name="phiMuonsPPt.eps" path="phiMuonsPPt.eps" size="10233" stream="phiMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp19677" user="orestano" version="1"
    META FILEATTACHMENT attachment="momentumMuonsPPt.eps" attr="h" comment="Muon candidates momentum in toroid on 900 GeV collisions" date="1266327546" name="momentumMuonsPPt.eps" path="momentumMuonsPPt.eps" size="10547" stream="momentumMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp19572" user="orestano" version="1"
    META FILEATTACHMENT attachment="momentumMuonsPPt.gif" attr="h" comment="Muon candidates momentum in toroid on 900 GeV collisions" date="1266327572" name="momentumMuonsPPt.gif" path="momentumMuonsPPt.gif" size="13367" stream="momentumMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp19696" user="orestano" version="1"
    META FILEATTACHMENT attachment="ptMuonsPPt.eps" attr="h" comment="Muon candidates transverse momentum in toroid on 900 GeV collisions" date="1266327626" name="ptMuonsPPt.eps" path="ptMuonsPPt.eps" size="10100" stream="ptMuonsPPt.eps" tmpFilename="/usr/tmp/CGItemp19716" user="orestano" version="1"
    META FILEATTACHMENT attachment="ptMuonsPPt.gif" attr="h" comment="Muon candidates transverse momentum in toroid on 900 GeV collisions" date="1266327668" name="ptMuonsPPt.gif" path="ptMuonsPPt.gif" size="12391" stream="ptMuonsPPt.gif" tmpFilename="/usr/tmp/CGItemp19622" user="orestano" version="1"

    Revision 32009-12-12 - WolfgangLiebig

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
    Warning
    Can't INCLUDE Atlas.AtlasPublicTopic repeatedly, topic is already included.
    Line: 18 to 18
     

    Preliminary Figures from 2009 Collision Data at 900 GeV

    Detector conditions for runs 141749 and 141811

    Changed:
    <
    <
    Blue led
    >
    >
    Blue led 
     The toroid magnets, which bend the muon tracks in the z projection, were OFF for runs 141749 and 141811, so the muons follow a straight path and the momentum is not measured in the spectrometer.
    Changed:
    <
    <
    Blue led
    >
    >
    Blue led 
     However, the acceptance is increased due to the fact that even very low momentum muons can traverse the spectrometer.
    Changed:
    <
    <
    Blue led
    >
    >
    Blue led 
     Cathode Strip Chambers are not yet included in the runs 141749 and 141811
    Changed:
    <
    <
    Blue led Event Selection and Data Sets
    cut description Numbers of events passing
    >
    >
    Blue led  Event Selection and Data Sets
    cut description
    Numbers of events passing
    runs 141749 and 14181
     
    Coincidence in MBTS (Min-bias trigger) and LAr timing 8k + 20k
    Changed:
    <
    <
    Good luminosity block and BCID per run and activity in the muon spectrometer 2022
    ID Selection criteria 124
    >
    >
    Good luminosity block and BCID per run
       Run 141749: LB 23-102
                            BCID:1, 899, 2674
       Run 141811: LB 126-165
    activity in the muon spectrometer
    2022
    ID Selection criteria
       P(ID) > 3 GeV
       at least 3 ID tracks with N(Pixel+SCT)>5
    124
     
    Combined and Standalone tracks with trigger chamber hits (RPC, TGC) 83
    Added: >
    >

    Figures

     

    Event Display

    Line: 49 to 50 
    Azimuthal angle distribution for muon candidates
    The distribution is flat in Φ, as expected for collisions.
    Added: >
    >

    SVG (Scalable Vector Graphics) eps file 
    phi
    Pseudorapidity distribution for muon candidates
    Distribution peaked at large η, as expected for minimum bias p-p collisions
    Added: >
    >

    SVG (Scalable Vector Graphics) eps file 
    eta
    Line: 62 to 65 closest distance in the plane transverse to the beam line. The expected width due to multiple scattering of 3 GeV momentum muons is about 200 mm - consistent with the measured value.Added: >
    >

    SVG (Scalable Vector Graphics) eps file  impact parameter

    Revision 22009-12-11 - DomiziaOrestano

    Line: 1 to 1
     
    META TOPICPARENT name="AtlasResults"
    Warning
    Can't INCLUDE Atlas.AtlasPublicTopic repeatedly, topic is already included.
    Line: 26 to 26
     However, the acceptance is increased due to the fact that even very low momentum muons can traverse the spectrometer.
    Blue led
    Changed:
    <
    <
    Cathide Strip Chambers are not yet included in the runs 141749 and 141811
    >
    >
    Cathode Strip Chambers are not yet included in the runs 141749 and 141811
     
    Blue led Event Selection and Data Sets
    cut description Numbers of events passing
    Coincidence in MBTS (Min-bias trigger) and LAr timing 8k + 20k
    Changed:
    <
    <
    Good luminosity block and BCID per run 2022
    >
    >
    Good luminosity block and BCID per run and activity in the muon spectrometer 2022
     
    ID Selection criteria 124
    Combined and Standalone tracks with trigger chamber hits (RPC, TGC) 83

    Revision 12009-12-11 - WolfgangLiebig

  • Muon reconstruction efficiencies dertermined Z->μμ decays at 7 TeV
  • Preliminary Figures from 2010 Collision Data at 7 TeV
  • Preliminary Figures from 2009 Collision Data at 900 GeV
  • <!--optional-->

    Introduction

    The combined muon performance plots below are approved to be shown by ATLAS speakers at conferences and similar events.

    Please do not add figures on your own.
    Contact the the muon combined performance coordinators (atlas-perf-muons-conveners@cernNOSPAMPLEASE.ch) in case of questions and/or suggestions.

    Preliminary Figures from 2009 Collision Data at 900 GeV

    Detector conditions for runs 141749 and 141811

    Line: 1 to 1
    Added:
    >
    >
    META TOPICPARENT name="AtlasResults"
    Warning
    Can't INCLUDE Atlas.AtlasPublicTopic repeatedly, topic is already included.
    <!--  
    • Set DENYTOPICVIEW =
    -->

    Combined Muon Performance Public Plots

    Blue led The toroid magnets, which bend the muon tracks in the z projection, were OFF for runs 141749 and 141811, so the muons follow a straight path and the momentum is not measured in the spectrometer.
    Blue led However, the acceptance is increased due to the fact that even very low momentum muons can traverse the spectrometer.
    Blue led Cathide Strip Chambers are not yet included in the runs 141749 and 141811
    Blue led Event Selection and Data Sets
    cut description Numbers of events passing
    Coincidence in MBTS (Min-bias trigger) and LAr timing 8k + 20k
    Good luminosity block and BCID per run 2022
    ID Selection criteria 124
    Combined and Standalone tracks with trigger chamber hits (RPC, TGC) 83

    Event Display

    Run 141749 event 133538
    Event display of a collision with two muon candidates in the end-cap. A full track fit has been successfully applied to the combined InnerDetector - MuonSpectrometer trajectory of both candidates.
    run141749 event133538

    Track parameter distributions

    Azimuthal angle distribution for muon candidates
    The distribution is flat in Φ, as expected for collisions.
    phi
    Pseudorapidity distribution for muon candidates
    Distribution peaked at large η, as expected for minimum bias p-p collisions
    eta
    Impact parameters distribution for muon candidates
    The impact parameter of a track is defined as the (geometrically signed) closest distance in the plane transverse to the beam line. The expected width due to multiple scattering of 3 GeV momentum muons is about 200 mm - consistent with the measured value.
    impact parameter


    Responsible: atlas-perf-muons-conveners@cernNOSPAMPLEASE.ch
    Last reviewed by: Never reviewed

    META FILEATTACHMENT attachment="run141749etc_phi.png" attr="h" comment="" date="1260562536" name="run141749etc_phi.png" path="run141749etc_phi.png" size="17311" stream="run141749etc_phi.png" tmpFilename="/usr/tmp/CGItemp22319" user="liebig" version="1"
    META FILEATTACHMENT attachment="run141749etc_eta.png" attr="h" comment="" date="1260562560" name="run141749etc_eta.png" path="run141749etc_eta.png" size="14313" stream="run141749etc_eta.png" tmpFilename="/usr/tmp/CGItemp22284" user="liebig" version="1"
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    META FILEATTACHMENT attachment="run141749etc_eta.eps" attr="h" comment="" date="1260562663" name="run141749etc_eta.eps" path="run141749etc_eta.eps" size="10902" stream="run141749etc_eta.eps" tmpFilename="/usr/tmp/CGItemp22351" user="liebig" version="1"
    META FILEATTACHMENT attachment="run141749etc_phi.eps" attr="h" comment="" date="1260562680" name="run141749etc_phi.eps" path="run141749etc_phi.eps" size="10938" stream="run141749etc_phi.eps" tmpFilename="/usr/tmp/CGItemp22275" user="liebig" version="1"
    META FILEATTACHMENT attachment="atlas2009-collision-vp1-141749-133538-2muons-web.png" attr="h" comment="" date="1260562735" name="atlas2009-collision-vp1-141749-133538-2muons-web.png" path="atlas2009-collision-vp1-141749-133538-2muons-web.png" size="1285127" stream="atlas2009-collision-vp1-141749-133538-2muons-web.png" tmpFilename="/usr/tmp/CGItemp22357" user="liebig" version="1"
     
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