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arXiv 1204.0735hep-ex
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使用ATLAS检测器搜索衰变PDKEEPAAA-> mu mu

Search for the decay Bs0 -> mu mu with the ATLAS detector

The ATLAS Collaboration

摘要:

利用ATLAS探测器在LHC上记录的质心能量为7 TeV的质子-质子碰撞进行了寻找衰变Bs 0-> mumu的盲分析。在积分亮度为2.4 fb^(-1)的情况下,没有发现超过背景预期的事件,并且在95%(90%)置信水平下,分支分数BR(Bs 0-> mu mu)的上限设定为< 2.2(1.9)x10^(-8)。

英文摘要:

A blind analysis searching for the decay Bs0 -> mumu has been performed using proton-proton collisions at a centre-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC. With an integrated luminosity of 2.4 fb^(-1) no excess of events over the background expectation is found and an upper limit is set on the branching fraction BR(Bs0 -> mu mu) < 2.2 (1.9) x10^(-8) at 95% (90%) confidence level.

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