Majorana Neutrinos in Muon Decay

2006/01/27 by Hiroyuki Nishiura, Nishiura, Hiroyuki
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0601231

9 pages. Talk given at NNR05 workshop on Neutrino Nuclear Responses in Double Beta Decays and Low-energy Astro-neutrinos, CAST and SPring-8, Japan, 2-4 December 2005

arxiv created 2006/03/15 · arxiv updated 2009/12/01

Abstract

The normal muon decay μ⁺ → e⁺ν_eν_μ is studied as a tool to discriminate between the Dirac and Majorana type neutrinos. For the purpose to do this, we propose a new parameterization in place of the Michel parameters for the energy spectrum of e⁺. The χ²-fitting is used by noticing different energy spectra between the Dirac and Majorana neutrino cases. We assume the interaction Hamiltonian which consists of the V-A and V+A charged currents.

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