Limits...
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

Resolution difference in transverse momentum  determination in the offline and in the event-filter reconstruction, as a function of  of the offline muon
© Copyright Policy - OpenAccess
Related In: Results  -  Collection


getmorefigures.php?uid=PMC4376470&req=5

Fig5: Resolution difference in transverse momentum determination in the offline and in the event-filter reconstruction, as a function of of the offline muon

Mentions: The offline momentum resolution is  % up to transverse momenta of 200 GeV and 10 % up to 1 TeV  [24]. The residual of the trigger-reconstructed with respect to the offline value is defined as , where is the transverse momentum reconstructed by the trigger, and the is that of the offline muon. The resolution difference between the trigger and offline reconstruction was defined as the standard deviation of a Gaussian function fitted to the distribution. Figure 5 shows the resolution differences, as a function of the offline muon , of the event-filter stand-alone and event-filter combined muons in the barrel and endcap regions. The resolution difference is about 2 and 5 % for event-filter combined and event-filter stand-alone muon, respectively.Fig. 5


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

- Eur Phys J C Part Fields (2015)

Resolution difference in transverse momentum  determination in the offline and in the event-filter reconstruction, as a function of  of the offline muon
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4376470&req=5

Fig5: Resolution difference in transverse momentum determination in the offline and in the event-filter reconstruction, as a function of of the offline muon
Mentions: The offline momentum resolution is  % up to transverse momenta of 200 GeV and 10 % up to 1 TeV  [24]. The residual of the trigger-reconstructed with respect to the offline value is defined as , where is the transverse momentum reconstructed by the trigger, and the is that of the offline muon. The resolution difference between the trigger and offline reconstruction was defined as the standard deviation of a Gaussian function fitted to the distribution. Figure 5 shows the resolution differences, as a function of the offline muon , of the event-filter stand-alone and event-filter combined muons in the barrel and endcap regions. The resolution difference is about 2 and 5 % for event-filter combined and event-filter stand-alone muon, respectively.Fig. 5

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