Neutrino Physics and Spontaneous CP Violation in the $μν$SSM
arXiv:0904.3112 · doi:10.1088/1126-6708/2009/08/105
Abstract
The $μν$SSM provides a solution to the $μ$ problem of the MSSM and explains the origin of neutrino masses by simply using right-handed neutrino superfields. We have completed the analysis of the vacua in this model, studying the possibility of spontaneous CP violation through complex Higgs and sneutrino vacuum expectation values. As a consequence of this process, a complex MNS matrix can be present. Besides, we have discussed the neutrino physics and the associated electroweak seesaw mechanism in the $μν$SSM, including also phases. Current data on neutrino masses and mixing angles can easily be reproduced.
32 pages, 8 figures, version to appear in JHEP, a discussion on EDMs added