论文标题
在$ b \ barbτ^+τ^ - 使用13 tev $ pp $ collision数据中搜索$ b \ barbτ^+τ^ - 从Atlas detector中搜索和非共振的Higgs玻色子对生产
Search for resonant and non-resonant Higgs boson pair production in the $b\bar bτ^+τ^-$ decay channel using 13 TeV $pp$ collision data from the ATLAS detector
论文作者
论文摘要
在搜索Higgs Boson对生产的搜索活动中，使用了两个$ B $ -Jets和两个$τ$ -Leptons，使用Proton-Proton碰撞数据集，其集成光度为139 fb $^{ - 1} $，以$ \ sqrt {s} = 13 $ tev tev tev the atlas atlas atlc at lhc收集的139 fb $^{ - 1} $。希格斯玻色子对产生非刺激性或在质量范围为251至1600 GEV的狭窄标量共振的衰减中。考虑到至少一个$τ$ -Lepton衰减的事件被考虑，并且使用多元判别因子拒绝背景。在非共鸣搜索中，没有观察到超过预期背景的大量事件。共振搜索中最大的超额量在1 TEV的共振质量中观察到，本地（全球）意义为$3.1σ$（$2.0σ$）。观察到的（预期）95％置信水平上限设置在非共鸣的Higgs玻色子成对生产横截面上，为4.7（3.9）乘以标准模型预测的标准模型运动学，以及在21和900 fb（12和840 fb）之间，在21和900 fb（12和840 fb）上，resonant Higgs Higgs Higgs Higgs Higgs Higgs玻色子配对横截面（均为），依次为specres fb，deveed resson deveved ressone deveved inseve ins vesson。
A search for Higgs boson pair production in events with two $b$-jets and two $τ$-leptons is presented, using a proton-proton collision dataset with an integrated luminosity of 139 fb$^{-1}$ collected at $\sqrt{s}=13$ TeV by the ATLAS experiment at the LHC. Higgs boson pairs produced non-resonantly or in the decay of a narrow scalar resonance in the mass range from 251 to 1600 GeV are targeted. Events in which at least one $τ$-lepton decays hadronically are considered, and multivariate discriminants are used to reject the backgrounds. No significant excess of events above the expected background is observed in the non-resonant search. The largest excess in the resonant search is observed at a resonance mass of 1 TeV, with a local (global) significance of $3.1σ$ ($2.0σ$). Observed (expected) 95% confidence-level upper limits are set on the non-resonant Higgs boson pair-production cross-section at 4.7 (3.9) times the Standard Model prediction, assuming Standard Model kinematics, and on the resonant Higgs boson pair-production cross-section at between 21 and 900 fb (12 and 840 fb), depending on the mass of the narrow scalar resonance.
