Phenomenology of neutral heavy leptons
High Energy Physics - Phenomenology
2009-10-30 v1
Abstract
We continue our previous work on the flavour-conserving leptonic decays of the Z boson with neutral heavy leptons (NHL's) in the loops by considering box, vertex, and self-energy diagrams for the muon decay. By inclusion of these loops (they contribute to the input parameter M_W) we can probe the full parameter space spanned by the so-called flavour-conserving mixing parameters ee_(mix), \mu\mu_(mix), \tau\tau_(mix) in a superstring-inspired model of neutrino mass. We compare the results of our analysis with the existing work in this field and conclude that flavour-conserving decays have certain advantages over traditionally considered flavour-violating ones.
Keywords
Cite
@article{arxiv.hep-ph/9612439,
title = {Phenomenology of neutral heavy leptons},
author = {Pat Kalyniak and Ivan Melo},
journal= {arXiv preprint arXiv:hep-ph/9612439},
year = {2009}
}
Comments
submitted to Phys. Rev. D, 30 pages, 9 figures (ps), REVTEX