论文标题
希格斯玻色子腐烂的证据
Evidence for Higgs boson decay to a pair of muons
论文作者
论文摘要
提出了希格斯玻色子衰变的证据。该结果结合了针对Higgs Boson的四个独家类别的搜索，通过Gluon Fusion通过Vector Boson Fusion，与Vector Boson结合，并与顶级夸克 - Antiquark对结合。分析是使用$ \ sqrt {s} = $ 13 TEV的质子 - 普罗顿碰撞数据进行的，对应于137 fb $^{ - 1} $的集成光度，由CMS实验记录在CERN LHC上。在具有3.0标准偏差的显着性的数据中观察到超过背景期望的事件过量，其中对标准模型（SM）Higgs玻色子的期望为125.38 GEV为2.5。该结果与记录在$ \ sqrt {s} = $ 7和8 TEV的数据的结合，对应于5.1和19.7 fb $^{ - 1} $的集成发光度分别增加了预期和观察到的显着性。相对于SM预测，测量的信号强度为1.19 $^{+0.40} _ { - 0.39} $（stat）$^{+0.15} _ { - 0.14} $（SYST）。该结果构成了希格斯玻色子腐烂到第二代费米子的第一个证据，并且是希格斯玻色子偶联到迄今为止报告的雄酮的最精确测量。
Evidence for Higgs boson decay to a pair of muons is presented. This result combines searches in four exclusive categories targeting the production of the Higgs boson via gluon fusion, via vector boson fusion, in association with a vector boson, and in association with a top quark-antiquark pair. The analysis is performed using proton-proton collision data at $\sqrt{s} =$ 13 TeV, corresponding to an integrated luminosity of 137 fb$^{-1}$, recorded by the CMS experiment at the CERN LHC. An excess of events over the background expectation is observed in data with a significance of 3.0 standard deviations, where the expectation for the standard model (SM) Higgs boson with mass of 125.38 GeV is 2.5. The combination of this result with that from data recorded at $\sqrt{s} =$ 7 and 8 TeV, corresponding to integrated luminosities of 5.1 and 19.7 fb$^{-1}$, respectively, increases both the expected and observed significances by 1%. The measured signal strength, relative to the SM prediction, is 1.19 $^{+0.40}_{-0.39}$ (stat) $^{+0.15}_{-0.14}$ (syst). This result constitutes the first evidence for the decay of the Higgs boson to second generation fermions and is the most precise measurement of the Higgs boson coupling to muons reported to date.
