Erratum to: Measurements of W and Z boson production in pp collisions at $$\sqrt{s}=5.02$$ s = 5.02 TeV with the ATLAS detector
Erratum to: Measurements of W and Z boson production in pp collisions at $$\sqrt{s}=5.02$$ s = 5.02 TeV with the ATLAS detector
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勘误表：使用 ATLAS 探测器在 $$sqrt{s}=5.02$$ s = 5.02 TeV 时测量 pp 碰撞中 W 和 Z 玻色子的产生
DOI：
10.1140/epjc/s10052-019-6870-9
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Aaboud M
中科院分区：
文献类型：
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作者：
Aaboud M
使用 2015 年大型强子对撞机 ATLAS 实验记录的数据报告了 sNN−−−√=5.02 TeV 下 Pb+Pb 碰撞中 W± 玻色子产生的测量结果，对应于 0.49nb−1 的总积分光度。 W±玻色子在电子或μ子轻子衰变通道中重建。轻子衰变 W± 玻色子的产量，通过最小偏差事件总数和核厚度函数标准化，在由探测器验收和主要运动学要求定义的基准区域内测量。这些归一化产率是针对 W+ 和 W− 玻色子分别测量的，并表示为带电轻子的赝快度和碰撞中心性的绝对值的函数。轻子电荷不对称性也被测量为轻子赝快度绝对值的函数。此外，核修改因子是使用 pp 碰撞中测量的 W± 玻色子产生截面来计算的。将结果与基于使用 CT14 部分子分布函数的次前导计算的预测以及使用 EPPS16 和 nCTEQ15 核部分子分布函数获得的预测进行比较。对于中中心和中心碰撞，观察到归一化产量不依赖于中心性，并且与预测具有良好的一致性。对于外围碰撞，数据与 W− (W+) 玻色子的预测一致，误差在 1.7 (0.9) 个标准差以内。
A measurement of W± boson production in Pb+Pb collisions at sNN−−−√=5.02 TeV is reported using data recorded by the ATLAS experiment at the LHC in 2015, corresponding to a total integrated luminosity of 0.49nb−1. The W± bosons are reconstructed in the electron or muon leptonic decay channels. Production yields of leptonically decaying W± bosons, normalised by the total number of minimum-bias events and the nuclear thickness function, are measured within a fiducial region defined by the detector acceptance and the main kinematic requirements. These normalised yields are measured separately for W+ and W− bosons, and are presented as a function of the absolute value of pseudorapidity of the charged lepton and of the collision centrality. The lepton charge asymmetry is also measured as a function of the absolute value of lepton pseudorapidity. In addition, nuclear modification factors are calculated using the W± boson production cross-sections measured in pp collisions. The results are compared with predictions based on next-to-leading-order calculations with CT14 parton distribution functions as well as with predictions obtained with the EPPS16 and nCTEQ15 nuclear parton distribution functions. No dependence of normalised production yields on centrality and a good agreement with predictions are observed for mid-central and central collisions. For peripheral collisions, the data agree with predictions within 1.7 (0.9) standard deviations for W− (W+) bosons.