Post freeze-out annihilations in the early universe

Abstract

We investigate the possible effect of the residual annihilations of heavy particles after freeze-out from equilibrium in the early universe. An error in previous work on this subject is pointed out and the correct method of solving the Boltzmann equation for this case is developed. For Majorana particles there are significant differences relative to previous work.

5 pages REVTEX, to appear in Phys. Lett. B

References in corpus (1)

• Tau Neutrino Decays and Big Bang Nucleosynthesis

Cited by in corpus (3)

• Radiative decay of a massive particle and the non-thermal process in primordial nucleosynthesis
• Cosmic Microwave Background constraint on residual annihilations of relic particles
• Finite Temperature Corrections to Relic Density Calculations