论文标题
搜索标准模型higgs玻色子的Dimuon衰变与Atlas检测器
A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector
论文作者
论文摘要
搜索标准模型（SM）Higgs玻色子的Dimuon衰变是使用与run2 $ pp $ collisions in $ \ sqrt {s} = 13 $ tev the tev the tev tev the Hadron Collider的大型collisions in 2 $ pp $ collisions中的139 fb $^{ - 1} $相对应的数据进行的。在质量为125.09 GEV的希格斯玻色子的仅背景假设上观察到的（预期）意义为$ 2.0 \，σ$（$ 1.7 \，σ$）。 $ pp \ to H \至μμ$的横截面时间分支比率的上限是95％置信度下的SM预测的2.2倍，而假设SM信号的缺失（存在）为$ 1.1 $（$ 2.0 $），则对$ H \ \ \ \ \ \ $ $ $ $ $ $ $ $ $ $ $。信号强度参数的最佳拟合值定义为观察到的信号产量的比率与SM中的预期的比率为$ = 1.2 \ pm 0.6 $。
A search for the dimuon decay of the Standard Model (SM) Higgs boson is performed using data corresponding to an integrated luminosity of 139 fb$^{-1}$ collected with the ATLAS detector in Run2 $pp$ collisions at $\sqrt{s}=13$ TeV at the Large Hadron Collider. The observed (expected) significance over the background-only hypothesis for a Higgs boson with a mass of 125.09 GeV is $2.0\,σ$ ($1.7\,σ$). The observed upper limit on the cross section times branching ratio for $pp \to H \to μμ$ is 2.2 times the SM prediction at 95% confidence level, while the expected limit on a $H \to μμ$ signal assuming the absence (presence) of a SM signal is $1.1$ ($2.0$). The best-fit value of the signal strength parameter, defined as the ratio of the observed signal yield to the one expected in the SM, is $μ= 1.2 \pm 0.6$.
