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arXiv 1209.3440hep-exhep-ph
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稀有B_0_(s)-> μ + μ-衰变

Rare B0_(s) -> mu+mu- decays

P. Eerola

摘要:

本文综述了Tevatron实验CDF和D 0以及LHC实验ATLAS、CMS和LHCb对稀有B 0_(s)-> μ + μ衰变的实验研究现状。B0_s -> mu+mu-的实验分支分数上限已经非常接近标准模型预测的分支分数,预计不久将首次观察到B0_s -> mu+mu-衰变。在标准模型中,稀有衰变B 0_(s)-> mu+mu-被高度抑制,因此,这些分支分数的精确测量为标准模型的各种扩展的自由参数提供了补充约束。

英文摘要:

This review summarizes the current experimental results on rare B0_(s) -> mu+mu- decays of the Tevatron experiments CDF and D0, and the LHC experiments ATLAS, CMS and LHCb. The experimental branching fraction upper limits for the B0_s -> mu+mu- are already quite close to the branching fraction predicted by the Standard Model, and the first observation of the B0_s -> mu+mu- decay is expected soon. The rare decays B0_(s) -> mu+mu- are highly suppressed in the Standard Model, and therefore accurate measurements of these branching fractions provide complementary constraints to the free parameters of various extensions of the Standard Model.

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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