Chiral charge flux and electroweak baryogenesis

By treating CP-violating interaction of the electroweak bubble wall as a perturbative term, chiral charge flux through the bubble wall is estimated. It is found that the absolute value of the flux FQ has a sharp peak at m0 - a - T with FQ/(uT3) - 10-3(QL-QR)Δθ. Here m0 is the fermion mass, 1/a is the wall thickness, T is the temperature at which the bubbles are growing, u is the wall velocity, QL(R) is the chiral charge of the relevant left (right)-handed fermion and Δθ is the measure of CP violation. (author)