arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2102.02238hep-ex
收藏

$\sqrt{s} =$ 13 TeV pp碰撞中产生Z +喷流和$γ$ +喷流以及与喷流共线的Z玻色子发射的微分截面的测量

Measurements of the differential cross sections of the production of Z + jets and $γ$ + jets and of Z boson emission collinear with a jet in pp collisions at $\sqrt{s} =$ 13 TeV

CMS Collaboration

摘要:

测量了Z +喷流和$γ$ +喷流的微分截面及其比值随玻色子横动量的变化。测量Z玻色子和最近的喷流之间的角分布。该分析是基于pp碰撞的质心能量为13 TeV,对应的积分亮度为35.9 fb $^{-1}$记录的CMS实验在大型强子对撞机。的结果,校正检测器的影响,与各种理论预测进行比较。在一般情况下,在高阶微扰理论的预测显示更好的协议与测量。这项工作提供了在13 TeV的Z +喷流和$γ$ +喷流生产的微分截面的比率的第一次测量,以及Z玻色子发射共线与喷流的第一次直接测量。

英文摘要:

Measurements of the differential cross sections of Z + jets and $γ$ + jets production, and their ratio, are presented as a function of the boson transverse momentum. Measurements are also presented of the angular distribution between the Z boson and the closest jet. The analysis is based on pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 35.9 fb$^{-1}$ recorded by the CMS experiment at the LHC. The results, corrected for detector effects, are compared with various theoretical predictions. In general, the predictions at higher orders in perturbation theory show better agreement with the measurements. This work provides the first measurement of the ratio of the differential cross sections of Z + jets and $γ$ + jets production at 13 TeV, as well as the first direct measurement of Z bosons emitted collinearly with a jet.

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。

↑