Radiative decay of the massive neutrino in external electromagnetic fields

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.54.5674· OSTI ID:388456

Gvozdev, A A; Mikheev, N V ^[1]; Vassilevskaya, L A ^[2]

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1. Division of Theoretical Physics, Department of Physics, Yaroslavl State University, Yaroslavl 150000 (Russia)
2. Moscow Lomonosov University, V-952, Moscow 117234 (Russia)

The radiative decay of the massive neutrino {nu}{sub {ital i}}{r_arrow}{nu}{sub {ital j}}{gamma} is investigated in the framework of the standard model in external electromagnetic fields of various configurations: constant crossed field, constant uniform magnetic field, plane monochromatic wave{close_quote}s field. The effect of significant enhancement of the neutrino decay probability by the external field (electromagnetic catalysis) is discussed. An especially strong enhancement occurs in the case of the ultrarelativistic neutrino decay, since in this case the decay probability does not contain suppression caused by the smallness of the decaying neutrino mass. The ultrarelativistic neutrino decay catalysis is significant even in a relatively weak external field ({ital F}/{ital F}{sub {ital e}}{lt}1, where {ital F}{sub {ital e}} is the critical Schwinger value). The expression for the photon splitting probability into a neutrino pair {gamma}{r_arrow}{nu}{sub {ital i}}{bar {nu}}{sub {ital j}} in the wave field is given. The estimations of a number of {gamma} quanta produced in a volume filled with an electromagnetic field and the neutrino lifetime in a strong magnetic field are presented. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 388456
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTROMAGNETIC FIELDS
EXTERNAL FIELDS
LIFETIME
MASS
NEUTRINOS
RADIATIVE DECAY
STANDARD MODEL