论文标题

在$ \ sqrt {s} $ pp $碰撞中搜索$zγ$衰变模式,

A search for the $Zγ$ decay mode of the Higgs boson in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector

论文作者

ATLAS Collaboration

论文摘要

搜索Higgs Boson的$Zγ$衰减,并提出了$ Z $玻色子腐烂成对的电子或Muons。该分析在$ \ sqrt {s} $ = 13 TEV上使用质子$ - $ - 质子碰撞数据,对应于Atlas检测器在大型Hadron碰撞器上记录的139 fb $^{ - 1} $的集成光度。观察到的数据与预期背景一致,价值为1.3%。在生产横截面时间的95%置信度的上限为$ pp \ with h \ tozγ$的分支比率为标准模型预测的3.6倍,而在存在标准模型HIGGS玻色子的情况下,预计有2.6倍。标准模型预测归一化的信号的最佳拟合值为$ 2.0^{+1.0} _ { - 0.9} $,其中不确定性的统计组件主要是主要的。

A search for the $Zγ$ decay of the Higgs boson, with $Z$ boson decays into pairs of electrons or muons is presented. The analysis uses proton$-$proton collision data at $\sqrt{s}$ = 13 TeV corresponding to an integrated luminosity of 139 fb$^{-1}$ recorded by the ATLAS detector at the Large Hadron Collider. The observed data are consistent with the expected background with a $p$-value of 1.3%. An upper limit at 95% confidence level on the production cross-section times the branching ratio for $pp\to H\to Zγ$ is set at 3.6 times the Standard Model prediction while 2.6 times is expected in the presence of the Standard Model Higgs boson. The best-fit value for the signal yield normalised to the Standard Model prediction is $2.0^{+1.0}_{-0.9}$ where the statistical component of the uncertainty is dominant.

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