Breaking of B-L in superstring inspired E6 model
摘要
In the framework of the superstring inspired E6 model, low-energy extensions of the standard model compatible with leptogenesis are considered and masses of right-handed neutrinos in two scenarios allowed by long-lived protons are discussed. The presence of two additional generations allows breaking of B-L without generating nonzero vacuum expectation values of right-handed sneutrinos of the three known generations. After the symmetry breaking, right-handed neutrinos acquire Majorana masses of order of 10^11 GeV. Within the framework of a simple discrete symmetry, assumptions made to provide a large mass of right-handed neutrinos are shown to be self-consistent. Supersymmetric structure of the theory ensures that large corrections, associated with the presence of a (super)heavy gauge field, cancel out.
引用
@article{arxiv.hep-ph/0412196,
title = {Breaking of B-L in superstring inspired E6 model},
author = {A. Kartavtsev},
journal= {arXiv preprint arXiv:hep-ph/0412196},
year = {2009}
}
备注
18 pages, 6 tables, axodraw used