Yaroslavl P.G. Demidov State University
Department of Theoretical Physics

Decay of a Massive Neutrino $\nu_i \to \nu_j \gamma$
in Crossed Fields

L.A. Vassilevskaya, A.A. Gvozdev and N.V. Mikheev

Published: Yadernaya Fizika, 1994, V. 57, N 1, P. 124-127.
[Physics of Atomic Nuclei, 1994, V. 57, N 1, P. 117-120.]

Abstract

The radiative decay of the massive neutrino $\nu_i \to \nu_j \gamma$ ($m_i > m_j$) in the electromagnetic crossed fields is analysed in detail in the framework of the standard model with lepton mixing. It is shown, that a sort of a catalysis of the neutrino radiative decay takes place in the crossed fields. The effect of the catalysis is significant in the strong crossed fields ($F \gg B_e = m_e^2 /e \simeq 4.41 \times 10^13$ G); it is more pronounced in the case of the decay of the ultrarelativistic neutrino ($E_\nu \gg m_\nu$), even in a relatively weak electromagnetic field ($F \ll B_e$).

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Revised June 1, 1998