arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1605.02487hep-ex
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$\sqrt{s} = 7, 8$和$13$ TeV质子-质子碰撞中的包容性单规范玻色子产生

Inclusive single gauge boson production in $\sqrt{s} = 7, 8$ and $13$ TeV proton-proton collisions

W. Barter

摘要:

我们报告了在不同质心能量下单个$W$和$Z$玻色子产生的LHC测量结果。ATLAS、CMS和LHCb探测器共同覆盖了从0到4.5的绝对快度范围,使标准模型物理在不同运动学区域的精确测试和研究成为可能。我们报告总,基准和微分截面测量和它们的比率。这些结果允许测试不同的部分子分布函数(PDF)的性能,并可用于进一步约束PDF。此外,将结果与使用不同方法来模拟量子色动力学效应的理论预测进行比较。我们还报告测量的前向后不对称性的$Z$玻色子衰变,和测量的角度系数,这提供了灵敏度的电弱混合角。

英文摘要:

We report LHC measurements of single $W$ and $Z$ boson production at different centre-of-mass energies. Together, the ATLAS, CMS, and LHCb detectors cover an absolute rapidity range from 0 to 4.5, enabling precision tests and studies of Standard Model physics across different kinematic regions. We report total, fiducial and differential cross-section measurements and their ratios. These results allow tests of the performance of different parton distribution functions (PDFs), and can be used to further constrain the PDFs. In addition, the results are compared to theoretical predictions which use different approaches to model effects within quantum chromodynamics. We also report measurements of the forward-backward asymmetry in $Z$ boson decays, and measurements of angular coefficients, which provide sensitivity to the electroweak mixing angle.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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