论文标题
在$ \ sqrt {s} $ = 13 TEV的$ pp $ collisions的MUON动量校准和性能的研究
Studies of the muon momentum calibration and performance of the ATLAS detector with $pp$ collisions at $\sqrt{s}$=13 TeV
论文作者
论文摘要
本文介绍了基于$ \ sqrt {s} $ = 13 tev在运行2期间的$ \ sqrt {s} $ = 13 tev的$ pp $碰撞数据样本的MUON动量校准和性能研究，并对应于139 fb $^{ - 1} $。一种创新的方法用于使用$ z \rightarrowμ^{+}μ^{ - } $共振来纠正与检测器几何学知识有关的潜在电荷依赖的动量偏差。使用$ J/ψ\rightArrowμ^{+}μ^{ - } $和$ z \rightarrowμ^{+}μ^{ - } $事件的样品测量MUON动量量表和分辨率。定义校准过程并应用于模拟数据，以匹配实际数据中测得的性能。使用$υ\rightarrowμ^{+}μ^{ - } $事件的独立样本验证校准。在$ z $（$ j/ψ$）的峰值下，动量量表以0.05％（0.1％）水平的不确定性测量，并以1.5％（2％）水平的不确定性测量分辨率。用专用的{\ em on intu}校正以高达450 GEV的校正，以高于0.03 tev $^{ - 1} $更好的精度来删除电荷依赖性偏置。
This paper presents the muon momentum calibration and performance studies for the ATLAS detector based on the $pp$ collisions data sample produced at $\sqrt{s}$=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 $Z \rightarrow μ^{+}μ^{-}$ resonance. The muon momentum scale and resolution are measured using samples of $J/ψ\rightarrow μ^{+}μ^{-}$ and $Z \rightarrow μ^{+}μ^{-}$ 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 $Υ\rightarrow μ^{+}μ^{-}$ 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 {\em in situ} correction for momenta up to 450 GeV with a precision better than 0.03 TeV$^{-1}$.
