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arXiv 2004.03969hep-ex
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$\sqrt{s}$ = 13 TeV时4 $\ell$衰变道中希格斯玻色子包容截面和微分基准截面的测量

Measurements of the Higgs boson inclusive and differential fiducial cross sections in the 4$\ell$ decay channel at $\sqrt{s}$ = 13 TeV

ATLAS Collaboration

摘要:

在$\ell = e,μ$($H \to ZZ^{*} \to 4\ell$)衰变道中测量了希格斯玻色子的包容和差分基准截面。结果基于大型强子对撞机产生的质子$-$质子碰撞数据,质心能量为13 TeV,并由ATLAS探测器在2015年至2018年记录,相当于139 fb $^{-1}$的积分光度。测量$H \to ZZ^{*} \to 4\ell$过程的包容性基准截面为$σ_\mathrm{fid} = 3.28 \pm 0.32$ fb,与标准模型预测的$σ_\mathrm{fid, SM} = 3.41 \pm 0.18 $ fb一致。差分基准截面测量的各种观测是敏感的生产和衰变的希格斯玻色子。所有的测量结果都与标准模型的预测一致。结果被用来约束异常的希格斯玻色子玻色子与标准模型粒子的相互作用。

英文摘要:

Inclusive and differential fiducial cross sections of the Higgs boson are measured in the $H \to ZZ^{*} \to 4\ell$ ($\ell = e,μ$) decay channel. The results are based on proton$-$proton collision data produced at the Large Hadron Collider at a centre-of-mass energy of 13 TeV and recorded by the ATLAS detector from 2015 to 2018, equivalent to an integrated luminosity of 139 fb$^{-1}$. The inclusive fiducial cross section for the $H \to ZZ^{*} \to 4\ell$ process is measured to be $σ_\mathrm{fid} = 3.28 \pm 0.32$ fb, in agreement with the Standard Model prediction of $σ_\mathrm{fid, SM} = 3.41 \pm 0.18 $ fb. Differential fiducial cross sections are measured for a variety of observables which are sensitive to the production and decay of the Higgs boson. All measurements are in agreement with the Standard Model predictions. The results are used to constrain anomalous Higgs boson interactions with Standard Model particles.

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