Observation ofttH production
Observation ofttH production
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生产观察
DOI：
10.1103/physrevlett.120.231801
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
CMS collaboration
中科院分区：
文献类型：
--
作者：
CMS collaboration
基于对质心能量为 8 和 13 TeV 的质子-质子碰撞数据的综合分析，报告了与顶夸克-反夸克对相关的希格斯玻色子产生的观察结果，分别对应高达 5.1、19.7 和 19.7 的积分光度。数据是通过 CERN LHC 的 CMS 探测器收集的。对与顶夸克-反夸克对一起产生的希格斯玻色子以及衰变成玻色子对、玻色子、光子、轻子或底夸克喷流的统计独立搜索结果相结合，以最大限度地提高灵敏度。观察到的事件过多，其显着性为 5.2 个标准差，超出了仅背景假设的预期。希格斯玻色子质量为 125.09 GeV 的标准模型的相应预期显着性是 4.2 个标准差。归一化为标准模型预测的组合最佳拟合信号强度为。
The observation of Higgs boson production in association with a top quark-antiquark pair is reported, based on a combined analysis of proton-proton collision data at center-of-mass energies of, 8, and 13 TeV, corresponding to integrated luminosities of up to 5.1, 19.7, and, respectively. The data were collected with the CMS detector at the CERN LHC. The results of statistically independent searches for Higgs bosons produced in conjunction with a top quark-antiquark pair and decaying to pairs ofbosons,bosons, photons,leptons, or bottom quark jets are combined to maximize sensitivity. An excess of events is observed, with a significance of 5.2 standard deviations, over the expectation from the background-only hypothesis. The corresponding expected significance from the standard model for a Higgs boson mass of 125.09 GeV is 4.2 standard deviations. The combined best fit signal strength normalized to the standard model prediction is.