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arXiv 1301.6575hep-ex
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LHCb上非常罕见的纯轻子末态衰变

Searches for very rare decays to purely leptonic final states at LHCb

Mathieu Perrin-Terrin

摘要:

我们提出了一个审查的搜索非常罕见的衰变到μ介子末态在LHCb使用1.0 fb-1的PP碰撞在7 TeV的质量中心的能量。在标准模型(SM)中,风味改变中性电流过程,例如B->mumu和B-> mumumu被高度抑制。因此,这种衰变允许新过程或新的重粒子的贡献,以显着修改预期的SM率。带电轻子味违反过程,如中微子少的τ->mumumu衰变,在SM中有极小的衰变率,但在扩展模型中可以显着增强。我们报告了LHCb在这些通道上的最新结果。

英文摘要:

We present a review of the searches for very rare decays to muonic final states performed at LHCb using 1.0 fb-1 of pp collisions at 7 TeV centre of mass energy. Flavour changing neutral current processes, such as B->mumu and B->mumumumu are highly suppressed in the Standard Model (SM). Such decays therefore allow contributions from new processes or new heavy particles to significantly modify the expected SM rates. Charged lepton flavour violating processes, such as the neutrino-less tau->mumumu decay, have vanishingly small decay rates in the SM, but can be significantly enhanced in extended models. We report the latest results on these channels from LHCb.

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