Electroweak baryogenesis with the vector-like quark model

Abstract

We study on the electroweak baryogenesis problem in the vector-like quark model. This model can add to the minimal standard model the extra CP-violation source which breaks CP spontaneously. Using charge transport mechanism suggested by Nelson et al, we can get the net hypercharge flux : $f_Y\sim 10^{-5}$. This result could nicely explain the present baryon to entropy ratio : ${\rho }_B/s\sim 10^{-9}$.

Comments: Latex file, 3pp