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arXiv 2301.10486hep-ex
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在LHC上ATLAS探测器记录的$\sqrt{s}$=13 TeV pp数据中,对包含$H\rightarrowγγ$的事例进行模型无关的新物理存在性搜索

Model-independent search for the presence of new physics in events including $H\rightarrowγγ$ with $\sqrt{s}$ = 13 TeV pp data recorded by the ATLAS detector at the LHC

ATLAS Collaboration

AI总结:

本文利用ATLAS探测器139 fb$^{-1}$的13 TeV pp数据,对含$H\rightarrowγγ$的22种末态进行模型无关新物理搜索,未发现显著超出并给出95%置信水平截面上限及探测器效率。

摘要:

利用CERN大型强子对撞机上ATLAS探测器记录的139 fb$^{-1}$、$\sqrt{s}$=13 TeV质子-质子对撞数据,对导致含有$H\rightarrowγγ$衰变末态的新物理进行了模型无关的搜索。该搜索考察了22种末态,这些末态按照与希格斯玻色子伴随产生的对象进行分类。这些对象包括孤立电子或缪子、强子衰变的$τ$轻子、额外光子、丢失横动量、强子喷注,以及被标记为含有b强子的喷注。未观测到超出标准模型预期的显著超出,并在95%置信水平上对产生截面设定了上限。文中报告了所有22个信号区的探测器效率,可用于将本文报告的探测器级截面上限转换为粒子级截面约束。

英文摘要:

A model-independent search for new physics leading to final states containing $H\rightarrowγγ$ decays is performed with 139 fb$^{-1}$ of $\sqrt{s}$ = 13 TeV pp collision data recorded by the ATLAS detector at the Large Hadron Collider at CERN. This search examines 22 final states categorized by the objects that are produced in association with the Higgs boson. These objects include isolated electrons or muons, hadronically decaying $τ$-leptons, additional photons, missing transverse momentum, and hadronic jets, as well as jets that are tagged as containing a b-hadron. No significant excesses above Standard Model expectations are observed and limits on the production cross section at 95% confidence level are set. Detector efficiencies are reported for all 22 signal regions, which can be used to convert detector-level cross-section limits reported in this paper to particle-level cross-section constraints.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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