Neutrino absorption by W production in the presence of a magnetic field

TL;DR

This paper calculates the decay rate of electron neutrinos into W bosons and electrons in a magnetic field, using quantum field theory techniques, and compares it with previous results in the weak field limit.

Contribution

It provides a new calculation of neutrino decay rates in magnetic fields, extending previous work by including the weak field approximation.

Findings

Decay rate derived from the imaginary part of the W exchange neutrino self-energy.

Results are consistent with existing calculations in the weak field limit.

Methodology can be applied to similar particle decay processes in magnetic environments.

Abstract

In this work we calculate the decay rate of the electron type neutrinos into $W$ bosons and electrons in presence of an external uniform magnetic field. The decay rate is calculated from the imaginary part of the $W$ exchange neutrino self-energy diagram but in the weak field limit and compare our result with the existing one.