CP violation at the finite temperature

Spontaneous CP Violation in the Minimal Supersymmetric Standard Model at Finite Temperature

We show that in the Minimal Supersymmetric Standard Model one–loop effects at finite temperature may lead to a spontaneous breaking of CP in-variance in the scalar sector. Requiring that the breaking takes place at the critical temperature for the electroweak phase transition, we find that 1

CP Violation at CDF

Spontaneous CP violation at the electroweak scale.

Utilizing results on the cosmology of anomalous discrete symmetries we show that models of spontaneous CP violation can in principle avoid the domain wall problem first pointed out by Zel’dovich, Kobzarev and Okun. A small but nonzero θQCD explicitly breaks CP and can lift the degeneracy of the two CP conjugate vacua through nonperturbative effects so that the domain walls become unstable, but ...

A Remark on Lorentz Violation at Finite Temperature

We investigate the radiatively induced Chern-Simons-like term in fourdimensional field theory at finite temperature. The Chern-Simons-like term is temperature dependent and breaks the Lorentz and CPT symmetries. We find that this term remains undetermined although it can be found unambiguously in different regularization schemes at finite temperature.

Neutral Higgs Cp Violation at + Colliders

CP violating asymmetries in both the production and the decays of s-channel neutral Higgs bosons at + colliders can be large. If the CP violation occurs in the muon-Higgs coupling, one observes a production asymmetry with transversely polarized + beams. Likewise if the CP violation occurs in the top-Higgs or -Higgs coupling, one observes an azimuthal decay asymmetry in + ! t t (or + ). CP studi...