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arXiv 1406.7663hep-ex
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用ATLAS探测器寻找标准模型希格斯玻色子衰变为$μ^{+}μ^{-}$

Search for the Standard Model Higgs boson decay to $μ^{+}μ^{-}$ with the ATLAS detector

ATLAS Collaboration

摘要:

利用欧洲核子研究中心(CERN)大型强子对撞机上ATLAS探测器在$\sqrt{s}$ =7和8 TeV的$pp$碰撞中收集的积分光度为$24.8~\rm{fb}^{-1}$的数据,对希格斯玻色子衰变为$μ^{+}μ^{-}$进行了研究.在120-150 GeV的搜索范围内,观测到的双μ子不变质量分布与标准模型背景假设一致。对于质量为125. 5 GeV的希格斯玻色子,在95%置信水平下观测到的(预期的)上限是标准模型预期的7. 0(7. 2)倍。这对应于$1.5\times10^{-3}$的分支比BR($H \rightarrow μ^+μ^-$)的上限。

英文摘要:

A search is reported for Higgs boson decay to $μ^{+}μ^{-}$ using data with an integrated luminosity of $24.8~\rm{fb}^{-1}$ collected with the ATLAS detector in $pp$ collisions at $\sqrt{s}$=7 and 8 TeV at the CERN Large Hadron Collider. The observed dimuon invariant mass distribution is consistent with the Standard Model background-only hypothesis in the 120-150 GeV search range. For a Higgs boson with a mass of 125.5 GeV, the observed (expected) upper limit at the 95 % confidence level is 7.0 (7.2) times the Standard Model expectation. This corresponds to an upper limit on the branching ratio BR($H \rightarrow μ^+μ^-$) of $1.5\times10^{-3}$.

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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