Muon reconstruction performance of the ATLAS detector in proton-proton collision data at root s=13 TeV

G. Aad; B. Abbott; J. Abdallah; O. Abdinov; B Abeloos; R. Aben; M. Abolins; O.S. AbouZeid; N.L. Abraham; H. Abramowicz; Mogens Dam; Jørn Dines Hansen; Jørgen Beck Hansen; Stefania Xella; Peter Henrik Hansen; Troels Christian Petersen; Sascha Mehlhase; Almut Maria Pingel; Alejandro Alonso Diaz; James William Monk; Gorm Aske Gram Krohn Galster; Lotte Ansgaard Thomsen; Ask Emil Løvschall-Jensen; Lars Egholm Pedersen

doi:10.1140/epjc/s10052-016-4120-y

Muon reconstruction performance of the ATLAS detector in proton-proton collision data at root s=13 TeV

G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B Abeloos, R. Aben, M. Abolins, O.S. AbouZeid, N.L. Abraham, H. Abramowicz, Mogens Dam, Jørn Dines Hansen, Jørgen Beck Hansen, Stefania Xella, Peter Henrik Hansen, Troels Christian Petersen, Sascha Mehlhase, Almut Maria Pingel, Alejandro Alonso Diaz, James William MonkGorm Aske Gram Krohn Galster, Lotte Ansgaard Thomsen, Ask Emil Løvschall-Jensen, Lars Egholm Pedersen

Experimental Particle Physics

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Abstract

This article documents the performance of the ATLAS muon identification and reconstruction using the LHC dataset recorded at s=13 TeV in 2015. Using a large sample of J/ ψ→ μμ and Z→ μμ decays from 3.2 fb^{- 1} of pp collision data, measurements of the reconstruction efficiency, as well as of the momentum scale and resolution, are presented and compared to Monte Carlo simulations. The reconstruction efficiency is measured to be close to 99% over most of the covered phase space (| η| < 2.5 and 5 < p_T< 100 GeV). The isolation efficiency varies between 93 and 100% depending on the selection applied and on the momentum of the muon. Both efficiencies are well reproduced in simulation. In the central region of the detector, the momentum resolution is measured to be 1.7% (2.3%) for muons from J/ ψ→ μμ (Z→ μμ) decays, and the momentum scale is known with an uncertainty of 0.05%. In the region | η| > 2.2 , the p_T resolution for muons from Z→ μμ decays is 2.9% while the precision of the momentum scale for low-p_T muons from J/ ψ→ μμ decays is about 0.2%.

Original language	English
Article number	292
Journal	European Physical Journal C
Volume	76
Issue number	5
ISSN	1434-6044
DOIs	https://doi.org/10.1140/epjc/s10052-016-4120-y
Publication status	Published - 23 May 2016

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Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., Abolins, M., AbouZeid, O. S., Abraham, N. L., Abramowicz, H., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Mehlhase, S., Pingel, A. M., Alonso Diaz, A., ... Pedersen, L. E. (2016). Muon reconstruction performance of the ATLAS detector in proton-proton collision data at root s=13 TeV. European Physical Journal C, 76(5), [292]. https://doi.org/10.1140/epjc/s10052-016-4120-y

Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, Abolins, M, AbouZeid, OS, Abraham, NL, Abramowicz, H, Dam, M , Hansen, JD , Hansen, JB , Xella, S , Hansen, PH , Petersen, TC, Mehlhase, S, Pingel, AM, Alonso Diaz, A, Monk, JW, Galster, GAGK, Thomsen, LA, Løvschall-Jensen, AE & Pedersen, LE 2016, 'Muon reconstruction performance of the ATLAS detector in proton-proton collision data at root s=13 TeV', European Physical Journal C, vol. 76, no. 5, 292. https://doi.org/10.1140/epjc/s10052-016-4120-y

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title = "Muon reconstruction performance of the ATLAS detector in proton-proton collision data at root s=13 TeV",

abstract = "This article documents the performance of the ATLAS muon identification and reconstruction using the LHC dataset recorded at s=13 TeV in 2015. Using a large sample of J/ ψ→ μμ and Z→ μμ decays from 3.2 fb- 1 of pp collision data, measurements of the reconstruction efficiency, as well as of the momentum scale and resolution, are presented and compared to Monte Carlo simulations. The reconstruction efficiency is measured to be close to 99% over most of the covered phase space (| η| < 2.5 and 5 < pT< 100 GeV). The isolation efficiency varies between 93 and 100% depending on the selection applied and on the momentum of the muon. Both efficiencies are well reproduced in simulation. In the central region of the detector, the momentum resolution is measured to be 1.7% (2.3%) for muons from J/ ψ→ μμ (Z→ μμ) decays, and the momentum scale is known with an uncertainty of 0.05%. In the region | η| > 2.2 , the pT resolution for muons from Z→ μμ decays is 2.9% while the precision of the momentum scale for low-pT muons from J/ ψ→ μμ decays is about 0.2%.",

author = "G. Aad and B. Abbott and J. Abdallah and O. Abdinov and B Abeloos and R. Aben and M. Abolins and O.S. AbouZeid and N.L. Abraham and H. Abramowicz and Mogens Dam and Hansen, {J{\o}rn Dines} and Hansen, {J{\o}rgen Beck} and Stefania Xella and Hansen, {Peter Henrik} and Petersen, {Troels Christian} and Sascha Mehlhase and Pingel, {Almut Maria} and {Alonso Diaz}, Alejandro and Monk, {James William} and Galster, {Gorm Aske Gram Krohn} and Thomsen, {Lotte Ansgaard} and L{\o}vschall-Jensen, {Ask Emil} and Pedersen, {Lars Egholm}",

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T1 - Muon reconstruction performance of the ATLAS detector in proton-proton collision data at root s=13 TeV

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdinov, O.

AU - Abeloos, B

AU - Aben, R.

AU - Abolins, M.

AU - AbouZeid, O.S.

AU - Abraham, N.L.

AU - Abramowicz, H.

AU - Dam, Mogens

AU - Hansen, Jørn Dines

AU - Hansen, Jørgen Beck

AU - Xella, Stefania

AU - Hansen, Peter Henrik

AU - Petersen, Troels Christian

AU - Mehlhase, Sascha

AU - Pingel, Almut Maria

AU - Alonso Diaz, Alejandro

AU - Monk, James William

AU - Galster, Gorm Aske Gram Krohn

AU - Thomsen, Lotte Ansgaard

AU - Løvschall-Jensen, Ask Emil

AU - Pedersen, Lars Egholm

PY - 2016/5/23

Y1 - 2016/5/23

N2 - This article documents the performance of the ATLAS muon identification and reconstruction using the LHC dataset recorded at s=13 TeV in 2015. Using a large sample of J/ ψ→ μμ and Z→ μμ decays from 3.2 fb- 1 of pp collision data, measurements of the reconstruction efficiency, as well as of the momentum scale and resolution, are presented and compared to Monte Carlo simulations. The reconstruction efficiency is measured to be close to 99% over most of the covered phase space (| η| < 2.5 and 5 < pT< 100 GeV). The isolation efficiency varies between 93 and 100% depending on the selection applied and on the momentum of the muon. Both efficiencies are well reproduced in simulation. In the central region of the detector, the momentum resolution is measured to be 1.7% (2.3%) for muons from J/ ψ→ μμ (Z→ μμ) decays, and the momentum scale is known with an uncertainty of 0.05%. In the region | η| > 2.2 , the pT resolution for muons from Z→ μμ decays is 2.9% while the precision of the momentum scale for low-pT muons from J/ ψ→ μμ decays is about 0.2%.

AB - This article documents the performance of the ATLAS muon identification and reconstruction using the LHC dataset recorded at s=13 TeV in 2015. Using a large sample of J/ ψ→ μμ and Z→ μμ decays from 3.2 fb- 1 of pp collision data, measurements of the reconstruction efficiency, as well as of the momentum scale and resolution, are presented and compared to Monte Carlo simulations. The reconstruction efficiency is measured to be close to 99% over most of the covered phase space (| η| < 2.5 and 5 < pT< 100 GeV). The isolation efficiency varies between 93 and 100% depending on the selection applied and on the momentum of the muon. Both efficiencies are well reproduced in simulation. In the central region of the detector, the momentum resolution is measured to be 1.7% (2.3%) for muons from J/ ψ→ μμ (Z→ μμ) decays, and the momentum scale is known with an uncertainty of 0.05%. In the region | η| > 2.2 , the pT resolution for muons from Z→ μμ decays is 2.9% while the precision of the momentum scale for low-pT muons from J/ ψ→ μμ decays is about 0.2%.

U2 - 10.1140/epjc/s10052-016-4120-y

DO - 10.1140/epjc/s10052-016-4120-y

M3 - Journal article

C2 - 28280436

SN - 1434-6044

VL - 76

JO - The European Physical Journal C: Particles and Fields

JF - The European Physical Journal C: Particles and Fields

IS - 5

M1 - 292

ER -

Muon reconstruction performance of the ATLAS detector in proton-proton collision data at root s=13 TeV

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