Revisiting electroweak baryogenesis in context of cancelation scenario in the MSSM

Abstract

We study electric dipole moment bounds on CP-violating phases in the MSSM with special emphasis on the cancelation scenario. We find that in the range favored by electroweak baryogenesis ({\it i.e.,} $|\mu |\simeq M_1$ or $|\mu |\simeq M_2$), $\sin [{\theta }_{\mu }+{\theta }_{M_1}]$ can be as large as $\mathcal{O}(1)$, even for slepton masses below 500 GeV. Such large values of the phases promise a successful electroweak baryogenesis. We also discuss the possibility of large CP-odd effects at a linear collider.

Comments: 7 pages, 3 figures