Electromagnetic properties of the neutrinos and the pion radiative decay

Details Electromagnetic properties of the neutrinos and the pion radiative decay Electromagnetic properties of the neutrinos and the pion radiative decay

1993-05-27

arxiv.org/abs/hep-ph/9305334v1

Phys.Rev.D49:5824-5829,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 figures available upon request, DFRM1 944/93, DFPD 93/TH/36 and SISSA AP/93/65

Scientific paper

10.1103/PhysRevD.49.5824

We investigate the implications of neutrino electromagnetic dipole moments for the radiative decay $\pi \rightarrow e \nu \gamma$. We show that the dominant new effect comes from the interference between the amplitude of the process with the photon emitted by the neutrino and the structure dependent standard amplitude. Such interference takes place only if the massive neutrino is a Majorana fermion. Moreover, since electric and magnetic dipole moments give rise to contributions with opposite signs, future experiments might be able to distinguish between them.

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