Baryon Asymmetry of the Universe in the Standard Model

Details Baryon Asymmetry of the Universe in the Standard Model Baryon Asymmetry of the Universe in the Standard Model

1993-05-17

arxiv.org/abs/hep-ph/9305275v2

Phys.Rev.D50:774,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

121pp plus 14 figures, CERN-TH.6734/93 and RU-93-11. latex. This is an extended version of the preprint originally issued in M

Scientific paper

10.1103/PhysRevD.50.774

We study the interactions of quarks and antiquarks with the changing Higgs field during the electroweak phase transition, including quantum mechanical and some thermal effects, with the only source of CP violation being the known CKM phase. The magnitude and sign of the predicted BAU agrees with the observed value, with moderately optimistic assumptions about the dynamics of the phase transition. At present uncertainties related to the dynamics of the ew phase transition and the oversimplifications of our treatment are too great to decide whether or not this is the correct explanation for the presence of remnant matter in our universe, however the present work makes it clear that the minimal standard model cannot be discounted as a contender for explaining this phenomenon.

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