Cosmological baryon production in spontaneous-CP-violating models without strong CP problem

Journal Article · Mon Dec 15 04:00:00 EST 1986 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.34.3824· OSTI ID:6700434

Cheng, H

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 ..delta..B 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.

• Research Organization: Physics Department, Indiana University, Bloomington, Indiana 47405
• OSTI ID: 6700434
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 34:12; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
645400 -- High Energy Physics-- Field Theory
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BARYONS
COLOR MODEL
COMPOSITE MODELS
COSMOLOGY
COUPLING CONSTANTS
CP INVARIANCE
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
HADRONS
HIGGS BOSONS
INVARIANCE PRINCIPLES
KOBAYASHI-MASKAWA MATRIX
MATHEMATICAL MODELS
MATRICES
PARTICLE MODELS
PARTICLE PRODUCTION
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
RENORMALIZATION
STANDARD MODEL
SUPERSYMMETRY
SYMMETRY
SYMMETRY BREAKING
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
UNIVERSE