Radiative Neutrino Decay in Media
High Energy Physics - Phenomenology
2009-10-31 v1 Astrophysics
Abstract
In this letter we introduce a new method to determine the radiative neutrino decay rate in the presence of a medium. Our approach is based on the generalisation of the optical theorem at finite temperature and density. Differently from previous works on this subject, our method allows to account for dispersive and dissipative electromagnetic properties of the medium. Some inconsistencies that are present in the literature are pointed-out and corrected here. We shortly discuss the relevance of our results for neutrino evolution in the early universe.
Keywords
Cite
@article{arxiv.hep-ph/9808390,
title = {Radiative Neutrino Decay in Media},
author = {Dario Grasso and Victor Semikoz},
journal= {arXiv preprint arXiv:hep-ph/9808390},
year = {2009}
}
Comments
11 pages, 3 encapsulated figures