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arXiv 1702.04555hep-ph
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从四体$τ$衰变中检验中微子的性质

Testing the nature of neutrinos from four-body $τ$ decays

Han Yuan, Yue Jiang, Tian-hong Wang, Qiang Li, Guo-Li Wang

摘要:

本文旨在讨论违反τ衰变的四体轻子数。我们研究了过程$τ^+ \to e^+ e^+ π^- ν_τ$和$τ^+ \to e^+ e^+ π^- ν_e$以确定中微子的性质。第一个过程违反轻子数两个单位,这只能通过内部马约拉纳发生。第二种是轻子数守恒,但违反轻子味,这可以发生在马约拉纳中微子和狄拉克中微子。我们计算了它们的分支比$Br$和微分分支比$dBr/dE_π$来区分Majorana中微子和Dirac中微子。我们还提出了进行这种检测的实验的可能性。

英文摘要:

This paper is designed to discuss four-body lepton number violating tau decay. We study the processes $τ^+ \to e^+ e^+ π^- ν_τ$ and $τ^+ \to e^+ e^+ π^- ν_e$ to determine the nature of neutrino. The first process violates lepton number by two units which can only happen through an internal Majorana. The second one conserves lepton number but violates lepton flavor which can take place with both Majorana neutrino and Dirac neutrino. We calculate their branching ratio $Br$ and differential branching ratio $dBr/dE_π$ to distinguish Majorana neutrino vs. Dirac neutrino. We also propose the possibility of experiment to perform this detection.

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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