CP violation Beyond the MSSM: Baryogenesis and Electric Dipole Moments
Abstract
We study electroweak baryogenesis and electric dipole moments in the presence of the two leading-order, non-renormalizable operators in the Higgs sector of the MSSM. Significant qualitative and quantitative differences from MSSM baryogenesis arise due to the presence of new CP-violating phases and to the relaxation of constraints on the supersymmetric spectrum (in particular, both stops can be light). We find: (1) spontaneous baryogenesis, driven by a change in the phase of the Higgs vevs across the bubble wall, becomes possible; (2) the top and stop CP-violating sources can become effective; (3) baryogenesis is viable in larger parts of parameter space, alleviating the well-known fine-tuning associated with MSSM baryogenesis. Nevertheless, electric dipole moments should be measured if experimental sensitivities are improved by about one order of magnitude.
Keywords
Cite
@article{arxiv.1003.2447,
title = {CP violation Beyond the MSSM: Baryogenesis and Electric Dipole Moments},
author = {Kfir Blum and Cedric Delaunay and Marta Losada and Yosef Nir and Sean Tulin},
journal= {arXiv preprint arXiv:1003.2447},
year = {2015}
}
Comments
33 pages, 6 figures