Cosmological baryon annihilation

Details Cosmological baryon annihilation Cosmological baryon annihilation

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.192p..19b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 192, July 1980, p. 19P-23P. Research supported by Oxford University.

Astronomy and Astrophysics

Astronomy

Annihilation Reactions, Baryons, Cosmology, Radioactive Decay, Astronomical Models, Black Holes (Astronomy)

Scientific paper

An improved estimate is given of the critical X (or Higgs) boson mass above which XX(bar) or (HH/bar/) pairs decay out of equilibrium to generate a baryon asymmetry. If the X-boson mass lies below this value, a smaller baryon asymmetry is generated. It is shown that in this latter situation, equilibrated 2-2 scatterings between quarks and leptons mediated by virtual X, Y or Higgs bosons can rapidly damp out the baryon number for a wide range of possible masses and couplings. Decay and 2-2 scattering are also evaluated in anisotropic cosmological backgrounds and for heavy bosons evaporated by mini black holes

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