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Revision 112014-11-26 - AnnaUsanova

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  Table 5: Selection efficiencies and number of signal and background events for integrated luminosity
of 10 fb−1. Preselection criteria used: 4 GeV < M(μμ) < 7.3 GeV , vertex fit c χ2 < 10 , transverse
decay length Lxy < 20 mm. Numbers of expected events are computed according to the Standard Model
expectation. In the left column for the bb mmX background the efficiencies are given separately for
each cut, in the right column the combined efficiency is given for the cuts on the pointing angle and on
the transverse decay length.
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PatrickJussel - 19 Nov 2008
SergeySivoklokov - 11 Feb 2009
 
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Revision 102014-10-16 - AnnaUsanova

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 Table 5: Selection efficiencies and number of signal and background events for integrated luminosity
of 10 fb−1. Preselection criteria used: 4 GeV < M(μμ) < 7.3 GeV , vertex fit c χ2 < 10 , transverse
decay length Lxy < 20 mm. Numbers of expected events are computed according to the Standard Model
expectation. In the left column for the bb mmX background the efficiencies are given separately for
each cut, in the right column the combined efficiency is given for the cuts on the pointing angle and on
the transverse decay length.
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Major updates:
-- PatrickJussel - 19 Nov 2008 -- SergeySivoklokov - 11 Feb 2009
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Major updates:
PatrickJussel - 19 Nov 2008 , SergeySivoklokov - 11 Feb 2009
 
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Revision 92010-12-06 - ElmarRitsch

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Revision 82010-06-02 - PatrickJussel

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This page contains ALL plots in the order as they appear in the CSC note, chapter Study of the rare decay Bs0 to mu+mu- in ATLAS. Only the CSC note contains all the relevant information and should thus be consulted if any of the plots is used.

Revision 72010-05-10 - PatrickJussel

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Revision 62009-11-24 - PatrickJussel

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Revision 52009-02-12 - SamiraHassani

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This page contains ALL plots in the order as they appear in the CSC note, chapter Study of the rare decay Bs0 to mu+mu- in ATLAS. Only the CSC note contains all the relevant information and should thus be consulted if any of the plots is used.

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Study of the rare decay Bs0 to mu+mu- in ATLAS Plots and Tables

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 Figure 7: The Monte Carlo di-muon mass distributions for signal B0s →μ+μ− (histogram), combinatorial background (closed circles) and non-combinatorial background (open circles and triangles) for (a) preselected events, (b) after cuts on transverse decay length, (c) pointing angle and (d) isolation. The number of events has been scaled to 10 fb−1 of integrated luminosity.
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Figure 8: Dimuon mass distribution for surviving events after applying all three cuts. The signal is shown as histogram, combinatorial background by closed circles and non-combinatorial backgrounds by opened circles and triangles. The combinatorial background is estimated assuming a factorisation of applied cuts. Statistics are given for an integrated luminosity 10 fb−1.
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Figure 8: Dimuon mass distribution for surviving events after applying all three cuts. The signal is shown as histogram, combinatorial background by closed circles and non-combinatorial backgrounds by opened circles and triangles. The combinatorial background is estimated assuming a factorisation of applied cuts. Statistics are given for an integrated luminosity 10 fb−1.
 
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Revision 42009-02-11 - SergeySivoklokov

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Study of the rare decay Bs0 to mu+mu- in ATLAS Plots and Tables

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Figure 2: Muon offline reconstruction efficiency as a function of pT . The superimposed histogram - pT spectrum of muons in the signal events (right scale).
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Figure 3: Reconstructed Bs mass in barrel - when both muons have |η| < 1.1(left) and in the end-cap - both muons have |η| > 1.1 (right)
Fig4.gif

Figure 4: Transverse decay length of reconstructed B0s candidates. The signal is shown as closed circles, background as opened circles. Distributions are normalised to 1. The vertical line indicates the lowest transverse decay length allowed for selected events.

Fig5.gif

Figure 5: Distribution of isolation variable Imm for the reconstructed B0s candidates. The signal is shown as closed circles, background as opened circles. Distributions are normalised to 1. The vertical line indicates the lowest values of variable Imm allowed for selected events.

Fig6.gif

Figure 6: Distribution of pointing angle a for the reconstructed B0s candidates. The signal is shown as closed circles, background as opened circles. Distributions is normalised to 1. The vertical line indicates the highest values of a allowed for selected events.

Fig7.gif

Figure 7: The Monte Carlo di-muon mass distributions for signal B0s →μ+μ− (histogram), combinatorial background (closed circles) and non-combinatorial background (open circles and triangles) for (a) preselected events, (b) after cuts on transverse decay length, (c) pointing angle and (d) isolation. The number of events has been scaled to 10 fb−1 of integrated luminosity.

Fig8.gif

Figure 8: Dimuon mass distribution for surviving events after applying all three cuts. The signal is shown as histogram, combinatorial background by closed circles and non-combinatorial backgrounds by opened circles and triangles. The combinatorial background is estimated assuming a factorisation of applied cuts. Statistics are given for an integrated luminosity 10 fb−1.


Table5.png

Table 5: Selection efficiencies and number of signal and background events for integrated luminosity
of 10 fb−1. Preselection criteria used: 4 GeV < M(μμ) < 7.3 GeV , vertex fit c χ2 < 10 , transverse
decay length Lxy < 20 mm. Numbers of expected events are computed according to the Standard Model
expectation. In the left column for the bb mmX background the efficiencies are given separately for
each cut, in the right column the combined efficiency is given for the cuts on the pointing angle and on
the transverse decay length.

 

<!--For significant updates to the topic, consider adding your 'signature' (beneath this editing box)-->
Major updates:
-- PatrickJussel - 19 Nov 2008
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Revision 32008-12-21 - SergeySivoklokov

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Since the CSC book is not yet published, you have to add 'preliminary' to all plots.

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Major updates:
-- PatrickJussel - 19 Nov 2008
 
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Revision 22008-12-20 - PatrickJussel

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Revision 12008-12-19 - SergeySivoklokov

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This page contains ALL plots in the order as they appear in the CSC note, chapter Study of the rare decay Bs0 to mu+mu- in ATLAS. Only the CSC note contains all the relevant information and should thus be consulted if any of the plots is used.

Since the CSC book is not yet published, you have to add 'preliminary' to all plots.

Study of the rare decay Bs0 to mu+mu- in ATLAS Plots and Tables

  • Figure 1:


<!--For significant updates to the topic, consider adding your 'signature' (beneath this editing box)-->
Major updates:
-- PatrickJussel - 19 Nov 2008

<!--Person responsible for the page: 
Either leave as is - the creator's name will be inserted; 
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Responsible: PatrickJussel
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Last reviewed by: Never reviewed
 
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