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


Radiative Transition of a Massive Neutrino
in the Field of an Intensive Electromagnetic Wave

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

Published: Yadernaya Fizika, 1995, V. 58, N 4, P. 712-717.
[Physics of Atomic Nuclei, 1995, V. 58, N 4, P. 654-659.]

Abstract

The radiative decay of the massive neutrino $\nu_i \to \nu_j \gamma$ in a circularly polarized electromagnetic wave is investigated within the Standard theory with lepton mixing. The general expression of the amplitude of the neutrino transition is obtained. The decay probability in the wave field does not contain the threshold factor $\sim (1 - m_i / m_j)$ as apposed to the decay probability in vacuum or in a constant uniform external field. The phenomenon of the gigantic enhancement ($\sim 10^33$) of the neutrino decay probability in the external wave field is found.


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