Method for the determination of hadronic tracking efficiencies using partially reconstructed charm decays.

People involved: Mika Vesterinen, Laurent Dufour, Jeroen van Tilburg, S. Hellesund, D. Mueller.

Note

The latest version of the note can be found at https://svnweb.cern.ch/cern/wsvn/lhcbdocs/Users/ldufour/Velo2Long/latest/latex/main.pdf

Code

All code is available on GitLab in the "AsymmetryTools" subproject of semileptonics. In there there is the "Velo2Long" in "projects". https://gitlab.cern.ch/lhcb-slb/AsymmetryTools

In order to compile:

(checkout the project)
source setenv.sh
cmake .
make
make install

Earlier documentation

"Measuring pion and kaon tracking efficiencies and asymmetries using charm decays with one partially reconstructed track" (S. Hellesund) LHCb-INT-2014-041

"Measurement of the Kaon Detection Asymmetry using Double-tagged Partially Reconstructed D0 Decays" (D. Mueller) LHCb-INT-2013-054

Data samples

* Location: /eos/lhcb/user/l/ldufour/Velo2Long contains (2012, 2015) 4-body and (2015, 2016) 2-body samples.

Monte Carlo samples

Large MC samples to be generated a.s.a.p.

BKK paths:

Signal

  • 27163003: 2012 conditions, Pythia 6 & 8, 2-body mode, DecProdCut
    • sim08a: evt+std://MC/2012/27163003/Beam4000GeV-2012-MagDown-Nu2.5-Pythia8/Sim08a/Digi13/Trig0x409f0045/Reco14a/Stripping20NoPrescalingFlagged/ALLSTREAMS.DST 3.5M events
    • sim08e: evt+std://MC/2012/27163003/Beam4000GeV-2012-MagDown-Nu2.5-Pythia8/Sim08e/Digi13/Trig0x409f0045/Reco14a/Stripping20NoPrescalingFlagged/ALLSTREAMS.DST 140k events
    • sim08h: evt+std://MC/2012/27163003/Beam4000GeV-2012-MagDown-Nu2.5-Pythia8/Sim08h/Digi13/Trig0x409f0045/Reco14c/Stripping20NoPrescalingFlagged/ALLSTREAMS.DST 1M events
    • sim09a: evt+std://MC/2012/27163003/Beam4000GeV-2012-MagDown-Nu2.5-Pythia8/Sim09a/Digi13/Trig0x409f0045/Reco14c/Stripping20NoPrescalingFlagged 1M events

  • 27163008: 2012 conditions, Pythia 6 & 8, 2-body mode, TightCut
    • sim08a: evt+std://MC/2012/27163008/Beam4000GeV-2012-MagDown-Nu2.5-Pythia8/Sim08a/Digi13/Trig0x409f0045/Reco14/Stripping20NoPrescalingFlagged/ALLSTREAMS.DST 2M events
    • (the other one is stripping filtered)

  • 27265000: 2012 conditions, Pythia 6 & 8, 4-body mode, DecProdCut (low statistics?)
    • sim08a: evt+std://MC/2012/27265000/Beam4000GeV-2012-MagDown-Nu2.5-Pythia8/Sim08a/Digi13/Trig0x409f0045/Reco14a/Stripping20NoPrescalingFlagged/ALLSTREAMS.DST 1.3M events

Background

  • 27163400: 2012 conditions, Pythia 8, DecProdCut, mode: K pi pi0
    • sim08f: evt+std://MC/2012/27163400/Beam4000GeV-2012-MagDown-Nu2.5-Pythia8/Sim08f/Digi13/Trig0x409f0045/Reco14a/Stripping20NoPrescalingFlagged/ALLSTREAMS.DST 5M events
  • 27173001: 2012 conditions, Pythia 8, DecProdCut, mode: K mu nu (semileptonic D decay)
    • sim08d: evt+std://MC/2012/27173001/Beam4000GeV-2012-MagDown-Nu2.5-Pythia8/Sim08d/Digi13/Trig0x409f0045/Reco14a/Stripping20NoPrescalingFlagged/ALLSTREAMS.DST 2.5M events

Overall structured flow paper

Task Order Completed Link to .pdf
Selection 1 Ongoing -
Fit model 2 No -
Resolution and bias studies 2 No -
Raw asymmetry and efficiency dependencies 3 No -
VELO efficiency determination 4 No -
Comparison with other methods 4 No -
Comparison to Monte Carlo 5 No -
Projected results and conclusion 5 No -

Todo list

  • Verify that the MatchLong efficiencies are the same as the StdAllNoPIDPions container
  • Verify the L0 trigger condition for the 2016 data set.
  • Actually get the VELO efficiencies in.

Earlier presentations

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Topic revision: r8 - 2018-01-15 - LuciaGrillo
 
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