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arXiv 1402.7360hep-phhep-ex
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三体核子衰变中的带电轻子谱近似

Charged Lepton Spectrum Approximation in a Three Body Nucleon Decay

Mu-Chun Chen, Volodymyr Takhistov

备注：
4 pages, 2 figures
发表信息：
Phys. Rev. D 89, 095003 (2014)
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摘要：

只有相空间通常用于在稀有衰变搜索中获得最终态粒子谱，这在三体过程的情况下是粗略的近似。我们将演示如何动力学和相空间可以近似占，在过程中，如核子衰变$p \rightarrow e^+ \barν ν$或$p \rightarrow μ^+ \barν ν$起源于大统一模型，使用一般有效费米理论形式的电弱μ子衰变$μ\rightarrow e^+ \barν ν$。这种方法允许一个更精确的，只有弱模型依赖的近似最终粒子光谱的这些和类似的衰变，这可能会改善罕见的过程搜索在当前和不久的将来的实验。

英文摘要：

Only phase space is typically used to obtain final state particle spectra in rare decay searches, which is a crude approximation in the case of three body processes. We will demonstrate how both dynamics and phase space can be approximately accounted for, in processes such as nucleon decays $p \rightarrow e^+ \barν ν$ or $p \rightarrow μ^+ \barν ν$ originating from Grand Unification models, using general effective Fermi theory formalism of electroweak muon decay $μ\rightarrow e^+ \barν ν$. This approach allows for a more precise and only weakly model dependent approximation of final particle spectra for these and similar decays, which may improve rare process searches in current and near-future experiments.

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