Antiprotons in the Universe as a cosmological test of grand unification

Journal Article · Fri May 01 04:00:00 EDT 1987 · Sov. J. Particles Nucl. (Engl. Transl.); (United States)

OSTI ID:6147408

Khlopov, M Y; Chechetkin, V M

The cosmological consequences of grand unification models are studied. A critical analysis is carried out of the possibilities of verifying the existence of the metastable particles predicted by such models at various stages of evolution of the Universe. Analysis of the observed abundances of light elements and the possible theoretical mechanisms for producing them reveals that there are interesting possible tests of the predictions of grand unification theories on the basis of how these predictions affect the primordial chemical composition. A wide class of grand unification models predicts new sources of antiprotons in the Universe after big-bang nucleosynthesis: decays of metastable particles, evaporation of primordial black holes, and antimatter domains. The analysis of p-bar/sup 4/ He interactions using the experimental data allows us to obtain nontrivial constraints on the possible CP-violation mechanisms and on the parameters of supersymmetric or asymptotically free grand unification models.

• Research Organization: M.V. Keldysh Institute of Applied Mathematics, Moscow
• OSTI ID: 6147408
• Journal Information: Sov. J. Particles Nucl. (Engl. Transl.); (United States), Journal Name: Sov. J. Particles Nucl. (Engl. Transl.); (United States) Vol. 18:3; ISSN SJPNA
• 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
ABUNDANCE
ANTIBARYONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEON REACTIONS
ANTINUCLEONS
ANTIPARTICLES
ANTIPROTON REACTIONS
ANTIPROTONS
BARYON REACTIONS
BARYONS
COSMOLOGY
CP INVARIANCE
ELEMENT ABUNDANCE
ELEMENTARY PARTICLES
ENERGY LEVELS
EXCITED STATES
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
HADRON REACTIONS
HADRONS
HELIUM 4 TARGET
INVARIANCE PRINCIPLES
MATHEMATICAL MODELS
METASTABLE STATES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
PARTICLE MODELS
SUPERSYMMETRY
SYMMETRY
TARGETS
TESTING
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
UNIVERSE