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arXiv 1206.0756hep-ex
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在sqrt(s)= 7 TeV时,用4.7 /fb的ATLAS数据搜索H -> WW(*)-> 1 nu l nu衰变模式中的标准模型希格斯玻色子

Search for the Standard Model Higgs boson in the H -> WW(*) -> l nu l nu decay mode with 4.7 /fb of ATLAS data at sqrt(s) = 7 TeV

ATLAS Collaboration

摘要:

在H → WW(*)→ lnulnu(l = e,mu)衰变模式中寻找标准模型希格斯玻色子.搜索是使用质子-质子碰撞数据进行的,这些数据对应于2011年在大型强子对撞机的ATLAS探测器上收集的质量中心能量为7 TeV的积分亮度为4.7 /fb。未观察到超过预期背景的显著过量事件。一个上限被放置在希格斯玻色子生产截面作为其质量的函数。一个质量在133 GeV到261 GeV之间的标准模型希格斯玻色子被排除在95%的置信水平之外,而预期的排除范围是127 GeV到233 GeV。

英文摘要:

A search for the Standard Model Higgs boson in the H -> WW(*) -> l nu l nu (l = e, mu) decay mode is presented. The search is performed using proton-proton collision data corresponding to an integrated luminosity of 4.7 /fb at a centre-of-mass energy of 7 TeV collected during 2011 with the ATLAS detector at the Large Hadron Collider. No significant excess of events over the expected background is observed. An upper bound is placed on the Higgs boson production cross section as a function of its mass. A Standard Model Higgs boson with mass in the range between 133 GeV and 261 GeV is excluded at 95% confidence level, while the expected exclusion range is from 127 GeV to 233 GeV.

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