Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...313..523d&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 313, Feb. 15, 1987, p. 523-530.
Astronomy and Astrophysics
Astrophysics
23
Cosmology, Decay, Gravitinos, Light Elements, Antimatter, Baryons, Maxima, Nuclear Reactions, Particle Density (Concentration), Photons
Scientific paper
Light-element yields, when a population of decaying gravitinos is present, have been evaluated for an interval of gravitino masses (mG) from 10 to 100,000 GeV, when only the photon-photino decay mode is allowed, and when both this channel and the gluon-gluino channel are open. Nuclei photodisintegration by photons and nuclei destruction by antimatter from gravitino decay have been taken into account. Upper bounds on the gravitino number density have been calculated by demanding that light-element production in the framework agree with observations. These limits strongly depend on the allowed decay modes and on the baryon density. If gluon-gluino is open, a region in the mG-YG plane has been found where light elements are synthetized in coherence with measured abundances for a critical baryon density corresponding to the Hubble constant of 50 km/s mpc.
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