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arXiv 1508.03372hep-ex
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用ATLAS探测器寻找希格斯玻色子的轻子味破坏$H\toμτ$衰变

Search for lepton-flavour-violating $H\toμτ$ decays of the Higgs boson with the ATLAS detector

ATLAS Collaboration

摘要:

本文介绍了在大型强子对撞机(LHC)上用ATLAS探测器直接寻找最近发现的希格斯玻色子的轻子味破坏(LFV)$H\toμτ$衰变。分析在$H\toμτ_{\mathrm{had}}$通道中进行,其中$τ_{\mathrm{had}}$是强子衰变的$τ$ -轻子。该搜索是基于ATLAS实验收集的质子-质子碰撞的数据样本,对应于在质量中心能量为$\sqrt{s}=8$ TeV的20.3 fb $^{-1}$的积分亮度。没有观察到超过预测背景的统计学显著过量的数据。观察到的(预期)分支分数Br($H\toμτ$)的95%置信水平上限为1.85%(1.24%)。

英文摘要:

A direct search for lepton-flavour-violating (LFV) $H\toμτ$ decays of the recently discovered Higgs boson with the ATLAS detector at the LHC is presented. The analysis is performed in the $H\toμτ_{\mathrm{had}}$ channel, where $τ_{\mathrm{had}}$ is a hadronically decaying $τ$-lepton. The search is based on the data sample of proton--proton collisions collected by the ATLAS experiment corresponding to an integrated luminosity of 20.3 fb$^{-1}$ at a centre-of-mass energy of $\sqrt{s}=8$ TeV. No statistically significant excess of data over the predicted background is observed. The observed (expected) 95% confidence-level upper limit on the branching fraction, Br($H\toμτ$), is 1.85% (1.24%).

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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