CPT-odd Leptogenesis
High Energy Physics - Phenomenology
2008-11-26 v2 Astrophysics
High Energy Physics - Theory
Abstract
We calculate the baryon asymmetry of the Universe resulting from the combination of higher-dimensional Lorentz-noninvariant CPT-odd operators and dimension five operators that induce the majorana mass for neutrinos. The strength of CPT-violating dimension five operators capable of producing the observed value of baryon abundance is directly related to neutrino masses and found to be in the trans-Planckian range 10^{-24}-10^{-22} GeV^{-1}. Confronting it with observational tests of Lorentz symmetry, we find that this range of Lorentz/CPT violation is strongly disfavored by the combination of the low-energy constraints and astrophysical data.
Keywords
Cite
@article{arxiv.hep-ph/0610070,
title = {CPT-odd Leptogenesis},
author = {Pavel A. Bolokhov and Maxim Pospelov},
journal= {arXiv preprint arXiv:hep-ph/0610070},
year = {2008}
}
Comments
19 pages, 4 figures