Temperature dependence of CP-violation in the Standard Model
Taanila, Olli (Helsinki Institute of Physics)

In Cold Electroweak Baryogenesis the baryon asymmetry is produced by out-of-equilibrium dynamics when the electroweak symmetry is broken at very low temperatures. This mechanism offers an explanation of the origin of the cosmic baryon asymmetry using only Standard Model physics and a low temperature initial condition. To address the question of the temperature dependence of the process, the temperature dependence of the effective CP-violating terms need to be calculated. For the first time, we calculate the temperature dependence of effective CP-violation in the Standard Model to leading order and generalize the calculation to higher order as well.