论文标题

通过组合$ h \ rightarrow zz^* \ rightarrow zz^* \ rightarrow 4 \ ell $和$ h \ rightArrowγγ$ decay $ decay频道,测量$ \ sqrt {s} = 13 $ tev与Atlas检测器的总和差分希格斯玻色子生产横截面的测量

Measurement of the total and differential Higgs boson production cross-sections at $\sqrt{s} = 13$ TeV with the ATLAS detector by combining the $H \rightarrow ZZ^* \rightarrow 4\ell$ and $H \rightarrow γγ$ decay channels

论文作者

ATLAS Collaboration

论文摘要

通过对$ H \ rightarrow zz^* \ rightarrow 4 \ ell $和$ h \rightArrowγγ$衰减通道的合并统计分析来测量总和微分希格斯玻色子生产横截面。结果基于质子 - 质子碰撞的139 fb $^{ - 1} $的数据集,该数据集在大型强子对撞机的Atlas检测器记录的13个TEV中心。测得的Higgs Boson生产横截面为55.5 $^{+4.0} _ { - 3.8} $ PB,与标准模型预测55.6 $ \ pm $ 2.5 pb一致。两个衰减通道的所有结果彼此兼容,它们的组合与标准模型预测一致。为了将Yukawa耦合探测到底部和魅力夸克(Quarks),对测得的基准横截面作为Higgs玻色子横向动量的函数的组合统计解释。还包括在$ h \ rightarrow b \ bar {b} $和$ c \ bar {c} $ decay频道中,以及$ h \ rightarrow b \ bar {b \ bar {b \ bar {c} $ d衰减频道,还包括来自希格斯玻色子生产的测量结果的约束来执行类似的解释。

The total and differential Higgs boson production cross-sections are measured through a combined statistical analysis of the $H \rightarrow ZZ^* \rightarrow 4\ell$ and $H \rightarrow γγ$ decay channels. The results are based on a dataset of 139 fb$^{-1}$ of proton-proton collisions at a centre-of-mass energy of 13 TeV, recorded by the ATLAS detector at the Large Hadron Collider. The measured total Higgs boson production cross-section is 55.5$^{+4.0}_{-3.8}$ pb, consistent with the Standard Model prediction of 55.6$\pm$ 2.5 pb. All results from the two decay channels are compatible with each other, and their combination agrees with the Standard Model predictions. A combined statistical interpretation of the measured fiducial cross-sections as a function of the Higgs boson transverse momentum is performed in order to probe the Yukawa couplings to the bottom and charm quarks. A similar interpretation is performed by including also the constraints from the measurements of Higgs boson production in association with a $W$ or $Z$ boson in the $H \rightarrow b\bar{b}$ and $c\bar{c}$ decay channels.

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