A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector
A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector
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DOI：
10.1016/j.physletb.2020.135980
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发表时间：
2021-01-10
影响因子：
4.4
通讯作者：
Zwalinski, L.
中科院分区：
文献类型：
--
作者：
Aaboud, M.;Aad, G.;Zwalinski, L.
使用与大型强子对撞机根 s = 13 TeV 处的 Run 2 pp 碰撞中 ATLAS 探测器收集的 139 fb(-1) 积分光度相对应的数据，对标准模型 (SM) 希格斯玻色子的二μ子衰变进行了搜索。对于质量为 125.09 GeV 的希格斯玻色子，与仅背景假设相比，观察到的（预期）显着性为 2.0 sigma (1.7 sigma)。观察到的 pp -> H -> mu mu 的横截面乘以分支比的上限是 95% 置信水平下 SM 预测的 2.2 倍，而假设不存在（存在）SM 信号的 H -> mu mu 信号的预期极限为 1.1(2.0)。信号强度参数的最佳拟合值（定义为观察到的信号产量与 SM 中预期信号产量的比率）为 mu = 1.2 +/- 0.6。 (C) 2020 作者。由 Elsevier B.V. 出版
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 Run 2 pp collisions at root 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 sigma (1.7 sigma). The observed upper limit on the cross section times branching ratio for pp -> H -> mu mu is 2.2 times the SM prediction at 95% confidence level, while the expected limit on a H -> mu mu 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 mu = 1.2 +/- 0.6. (C) 2020 The Author(s). Published by Elsevier B.V.