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Analysis of the Rare Decay K~+ → μ~+ v μ~(+μ-)

机译:分析稀有腐烂k〜+→m〜+ v m〜(+ m-)

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摘要

The main goal of the NA62 experiment at CERN is a study of the ultra rare decay K → πvv. The collected statistics allows to analyse other rare decays, in particular, K~+ →μ~+vμ~+ μ~-. Rare decays make it possible to experimentally investigate one of the aspects of the Standard Model, the chiral perturbative theory (ChPT). ChPT predicts decay probability of K~+ →μ+vμ+ μ-:1.35 x 10~(-8). This decay channel is also of great interest due to the fact, that it was not experimentally observed, there is only an upper limit < 4.1 x 10~(-7) CL 90%. We present the research methodology, the first results of signal selection and the study of the background sources for the decay.
机译:NA62实验在CERN的主要目标是对超罕见衰减k→πvv的研究。收集的统计数据允许分析其他罕见的衰减,特别是K〜+→μ〜+μ〜+μ〜 - 。罕见的衰减可以通过实验研究标准模型的一个方面,手性扰动理论(CHPT)。 CHPT预测K〜+→μ+μ-::10-:1.35 x 10〜(-8)的衰减概率。由于事实上,这种衰变渠道也很有兴趣,即它没有实验观察,仅有一个上限<4.1×10〜(-7)C10%。我们提出了研究方法,信号选择的第一个结果以及衰减背景源的研究。

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