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Studies of the muon momentum calibration and performance of the ATLAS detector with pp collisions at √s = 13 TeV ATLAS Collaboration
Abstract
This paper presents the muon momentum calibration and performance studies for the ATLAS detector based on the pp collisions data sample produced at √s = 13 TeV at the LHC during Run 2 and corresponding to an integrated luminosity of 139 fb−1. An innovative approach is used to correct for potential charge-dependent momentum biases related to the knowledge of the detector geometry, using the Z → μ+μ− resonance. The muon momentum scale and resolution are measured using samples of J/ψ → μ+μ− and Z → μ+μ− events. A calibration procedure is defined and applied to simulated data to match the performance measured in real data. The calibration is validated using an independent sample of ϒ → μ+μ− events. At the Z (J/ψ) peak, the momentum scale is measured with an uncertainty at the 0.05% (0.1%) level, and the resolution is measured with an uncertainty at the 1.5% (2%) level. The charge-dependent bias is removed with a dedicated in situ correction for momenta up to 450 GeV with a precision better than 0.03 TeV−1.
Item Metadata
Title |
Studies of the muon momentum calibration and performance of the ATLAS detector with pp collisions at √s = 13 TeV
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Creator | |
Publisher |
Springer Berlin Heidelberg
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Date Issued |
2023-08-01
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Description |
This paper presents the muon momentum calibration and performance studies for the ATLAS detector based on the pp collisions data sample produced at
√s = 13 TeV at the LHC during Run 2 and corresponding to an integrated luminosity of 139 fb−1. An innovative
approach is used to correct for potential charge-dependent
momentum biases related to the knowledge of the detector geometry, using the Z → μ+μ− resonance. The muon
momentum scale and resolution are measured using samples
of J/ψ → μ+μ− and Z → μ+μ− events. A calibration
procedure is defined and applied to simulated data to match
the performance measured in real data. The calibration is validated using an independent sample of ϒ → μ+μ− events.
At the Z (J/ψ) peak, the momentum scale is measured with
an uncertainty at the 0.05% (0.1%) level, and the resolution
is measured with an uncertainty at the 1.5% (2%) level. The
charge-dependent bias is removed with a dedicated in situ
correction for momenta up to 450 GeV with a precision better than 0.03 TeV−1.
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Genre | |
Type | |
Language |
eng
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Date Available |
2023-09-18
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution 4.0 International (CC BY 4.0)
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DOI |
10.14288/1.0435922
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URI | |
Affiliation | |
Citation |
The European Physical Journal C. 2023 Aug 01;83(8):686
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Publisher DOI |
10.1140/epjc/s10052-023-11584-x
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Peer Review Status |
Reviewed
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Scholarly Level |
Faculty; Researcher
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Copyright Holder |
The Author(s)
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
Attribution 4.0 International (CC BY 4.0)