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arXiv 2103.10319hep-ex
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用ATLAS探测器测量在$\sqrt{s}=13~$ TeV上PDMATHAAB碰撞中的$W^+W^-+\ge 1~$喷流产生截面

Measurements of $W^+W^-+\ge 1~$jet production cross-sections in $pp$ collisions at $\sqrt{s}=13~$TeV with the ATLAS detector

ATLAS Collaboration

摘要:

本文给出了在至少有一个强子喷注的事件中$W^+W^-$产生的基准和微分测量。这些横截面的测量是敏感的电弱玻色子自相互作用的属性,并提供了微扰量子色动力学和电弱理论的测试。使用质子$-$质子碰撞数据收集在$\sqrt{s}=13~$ TeV的ATLAS实验进行分析,对应于139 $~$ fb $^{-1}$的积分光度。事件被选择与正好一个相反电荷的电子$-$ μ子对和至少一个强子喷流与$p_{\mathrm{T}}>30~$ GeV的横向动量和$|η|<4.5$的赝快度。减去背景贡献和校正检测器的影响后,喷气包容PDMATHAMT喷基准截面和$W^+W^-+$喷相对于几个运动学变量的差分截面进行测量,从而探测以前未探索的事件拓扑结构在大型强子对撞机。这些测量包括轻子量,如$W^+W^-$系统的轻子横动量和横质量,以及与喷流相关的观测量,如领先的喷流横动量和喷流多重性。在标准模型振幅和反常振幅之间的干涉增强的相空间中,得到了反常三规范玻色子耦合的极限。

英文摘要:

Fiducial and differential measurements of $W^+W^-$ production in events with at least one hadronic jet are presented. These cross-section measurements are sensitive to the properties of electroweak-boson self-interactions and provide a test of perturbative quantum chromodynamics and the electroweak theory. The analysis is performed using proton$-$proton collision data collected at $\sqrt{s}=13~$TeV with the ATLAS experiment, corresponding to an integrated luminosity of 139$~$fb$^{-1}$. Events are selected with exactly one oppositely charged electron$-$muon pair and at least one hadronic jet with a transverse momentum of $p_{\mathrm{T}}>30~$GeV and a pseudorapidity of $|η|<4.5$. After subtracting the background contributions and correcting for detector effects, the jet-inclusive $W^+W^-+\ge 1~$jet fiducial cross-section and $W^+W^-+$ jets differential cross-sections with respect to several kinematic variables are measured, thus probing a previously unexplored event topology at the LHC. These measurements include leptonic quantities, such as the lepton transverse momenta and the transverse mass of the $W^+W^-$ system, as well as jet-related observables such as the leading jet transverse momentum and the jet multiplicity. Limits on anomalous triple-gauge-boson couplings are obtained in a phase space where interference between the Standard Model amplitude and the anomalous amplitude is enhanced.

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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