Other
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..34.3824c&link_type=abstract
Physical Review D (Particles and Fields), Volume 34, Issue 12, 15 December 1986, pp.3824-3830
Other
2
Charge Conjugation, Parity, Time Reversal, And Other Discrete Symmetries, Spontaneous And Radiative Symmetry Breaking, Particle-Theory And Field-Theory Models Of The Early Universe
Scientific paper
We study the cosmological baryon production in two different classes of spontaneous-CP-violating models with no strong CP problem. All known realistic models predict a large ΔB in the range required by the observed baryon asymmetry. In the first class of models in which CP violation is transmitted from the grand-unification scale down to the low-energy sector through fermion mixing effects, baryon asymmetry arises from the nonunitarity of the transformation matrices. It is pointed out that there is no dangerous flavor-changing neutral current due to Z-boson exchanges in the Nelson-type models. Weak CP-odd interactions are mediated by colored scalars in the second class of models. Large matter-antimatter asymmetry can result from the decays of superheavy leptoquark scalars or from the decays of color-triplet Higgs bosons into a superheavy and light fermion.
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