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Performance of the ATLAS muon trigger in pp collisions at [Formula: see text] TeV.

- Eur Phys J C Part Fields (2015)

Bottom Line: The efficiency of the single-muon trigger is measured for muons with transverse momentum [Formula: see text] GeV, with a statistical uncertainty of less than 0.01 % and a systematic uncertainty of 0.6 %.The muon trigger shows highly uniform and stable performance.The performance is compared to the prediction of a detailed simulation.

View Article: PubMed Central - PubMed

Affiliation: CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille, France.

ABSTRACT

The performance of the ATLAS muon trigger system is evaluated with proton-proton collision data collected in 2012 at the Large Hadron Collider at a centre-of-mass energy of 8 TeV. It is primarily evaluated using events containing a pair of muons from the decay of [Formula: see text] bosons. The efficiency of the single-muon trigger is measured for muons with transverse momentum [Formula: see text] GeV, with a statistical uncertainty of less than 0.01 % and a systematic uncertainty of 0.6 %. The [Formula: see text] range for efficiency determination is extended by using muons from decays of [Formula: see text] mesons, [Formula: see text] bosons, and top quarks. The muon trigger shows highly uniform and stable performance. The performance is compared to the prediction of a detailed simulation.

No MeSH data available.


Related in: MedlinePlus

Efficiency of passing either the mu24i or mu36 trigger as a function of the probe-muon transverse momentum , for a the barrel region and b the endcap region, for data (dots) and MC simulation (bands). The lower panels show the ratio of the data and MC efficiencies. The error bars include both statistical and systematic uncertainties
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Fig8: Efficiency of passing either the mu24i or mu36 trigger as a function of the probe-muon transverse momentum , for a the barrel region and b the endcap region, for data (dots) and MC simulation (bands). The lower panels show the ratio of the data and MC efficiencies. The error bars include both statistical and systematic uncertainties

Mentions: Requiring events to pass either the mu24i or the mu36 trigger serves as a general-purpose single-muon triggers for many physics analyses. Figure 8 shows the efficiency to pass either the mu24i or the mu36 trigger as determined in the barrel and endcap regions. The efficiency was measured as a function of the of the reconstructed probe-muon for both data and simulation. The efficiency in the simulation is seen to match that of the data over a wide range. The slight excess in simulation in the bin centred at 130 GeV was studied in detail. High muons from -boson decays tend to be slightly more forward where there is the largest difference in trigger efficiency between data and simulation.Fig. 8


Performance of the ATLAS muon trigger in pp collisions at [Formula: see text] TeV.

- Eur Phys J C Part Fields (2015)

Efficiency of passing either the mu24i or mu36 trigger as a function of the probe-muon transverse momentum , for a the barrel region and b the endcap region, for data (dots) and MC simulation (bands). The lower panels show the ratio of the data and MC efficiencies. The error bars include both statistical and systematic uncertainties
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4376470&req=5

Fig8: Efficiency of passing either the mu24i or mu36 trigger as a function of the probe-muon transverse momentum , for a the barrel region and b the endcap region, for data (dots) and MC simulation (bands). The lower panels show the ratio of the data and MC efficiencies. The error bars include both statistical and systematic uncertainties
Mentions: Requiring events to pass either the mu24i or the mu36 trigger serves as a general-purpose single-muon triggers for many physics analyses. Figure 8 shows the efficiency to pass either the mu24i or the mu36 trigger as determined in the barrel and endcap regions. The efficiency was measured as a function of the of the reconstructed probe-muon for both data and simulation. The efficiency in the simulation is seen to match that of the data over a wide range. The slight excess in simulation in the bin centred at 130 GeV was studied in detail. High muons from -boson decays tend to be slightly more forward where there is the largest difference in trigger efficiency between data and simulation.Fig. 8

Bottom Line: The efficiency of the single-muon trigger is measured for muons with transverse momentum [Formula: see text] GeV, with a statistical uncertainty of less than 0.01 % and a systematic uncertainty of 0.6 %.The muon trigger shows highly uniform and stable performance.The performance is compared to the prediction of a detailed simulation.

View Article: PubMed Central - PubMed

Affiliation: CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille, France.

ABSTRACT

The performance of the ATLAS muon trigger system is evaluated with proton-proton collision data collected in 2012 at the Large Hadron Collider at a centre-of-mass energy of 8 TeV. It is primarily evaluated using events containing a pair of muons from the decay of [Formula: see text] bosons. The efficiency of the single-muon trigger is measured for muons with transverse momentum [Formula: see text] GeV, with a statistical uncertainty of less than 0.01 % and a systematic uncertainty of 0.6 %. The [Formula: see text] range for efficiency determination is extended by using muons from decays of [Formula: see text] mesons, [Formula: see text] bosons, and top quarks. The muon trigger shows highly uniform and stable performance. The performance is compared to the prediction of a detailed simulation.

No MeSH data available.


Related in: MedlinePlus