Baryon Asymmetry Due to the b{5} Higgs Bosons Transition in SU(5)

Details Baryon Asymmetry Due to the b{5} Higgs Bosons Transition in SU(5) Baryon Asymmetry Due to the b{5} Higgs Bosons Transition in SU(5)

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pthph..73.1515k&link_type=abstract

Progress of Theoretical Physics, Vol. 73, No. 6, pp. 1515-1524

Physics

Scientific paper

The baryon asymmetry is examined in an SU(5) model where two b{5} Higgs bosons are assumed. In this model, there are two types of processes to produce the baryon asymmetry; one is the direct decays of b{5} Higgs bosons into fermions (the standard approach) and the other is the transitions between these bosons. Here we discuss the latter process especially and show that complex quartic scalar couplings in the Higgs potential break the CP invariance in this process. We show that with appropriate values of coupling constants the latter transition process is as important as the former (standard) one, so that the transition between two b{5} Higgs bosons seems to be one of plausible mechanisms to explain the baryon asymmetry in the present universe.

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