arXiv 1906.091702019-06-21hep-ex

ATLAS中双玻色子和多玻色子的最新结果

Recent diboson and multiboson results in ATLAS

Markus Cristinziani

备注：: 13 pages, 8 figures, contribution to the proceedings of the Seventh Annual Conference on Large Hadron Collider Physics (LHCP2019)
发表信息：: PoS (LHCP2019) 157

摘要：

本文报道了在大型强子对撞机上用ATLAS探测器收集的质量中心能量为$\sqrt{s} = 13$ TeV的质子-质子碰撞中产生两个或三个大质量矢量玻色子的最新测量结果。双玻色子分析以产生和衰变模式$WW\rightarrow eν_eμν_μ$、$WZ \rightarrow \ell^{\prime} ν\ell \ell\,(\ell = e, μ)$、$ZZ \rightarrow \ell\ellνν$和$4\ell$终态为目标。基准包容性的横截面相比，国家的最先进的标准模型计算和几个展开的差分分布进行了测量。在$WZ$通道中，探测$W$和$Z$玻色子的螺旋度。结果解释的限制异常规范耦合的有效场理论的框架。最后，给出了三个大质量矢量玻色子（$WWW$，$WWZ$，$WZZ$）产生的第一个证据。

英文摘要：

Recent measurements of the associated production of two or three massive vector bosons in proton-proton collisions at the Large Hadron Collider, collected by the ATLAS detector at a centre-of-mass energy of $\sqrt{s} = 13$ TeV, are reported. The diboson analyses target the production and decay modes $WW\rightarrow eν_eμν_μ$, $WZ \rightarrow \ell^{\prime} ν\ell \ell\,(\ell = e, μ)$, $ZZ \rightarrow \ell\ellνν$, and the $4\ell$ final state. Fiducial inclusive cross sections are compared to state-of-the-art Standard Model calculations and several unfolded differential distributions are measured. In the $WZ$ channel, the helicities of the $W$ and $Z$ bosons are probed. Results are interpreted in terms of limits on anomalous gauge couplings in the framework of effective field theories. Finally, the first evidence for the production of three massive vector bosons ($WWW$, $WWZ$, $WZZ$) is presented.

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。

摘要：

英文摘要：

相关论文