An effective theory for Leptogenesis
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
The effective Lagrangian for the seesaw model is derived. Besides the usual dimension-5 operator responsible for light neutrino masses, a dimension-6 operator is included which, for three or less heavy neutrino generations, provides a generic link between low-energy observables and all physical parameters of the high-energy seesaw Lagrangian. Leptogenesis can be then confirmed or ruled out through the measurement of neutrino masses and mixings and the exotic neutrino couplings originated from the dimension-6 operator.
Cite
@article{arxiv.hep-ph/0305131,
title = {An effective theory for Leptogenesis},
author = {A. Broncano},
journal= {arXiv preprint arXiv:hep-ph/0305131},
year = {2007}
}
Comments
6 pages. Based on the talk given at the XXXVIII Rencontres de Moriond (Electroweak Session)