Post freeze-out annihilations in the early universe

Details Post freeze-out annihilations in the early universe Post freeze-out annihilations in the early universe

1998-07-29

arxiv.org/abs/astro-ph/9807302v2

Phys.Lett. B452 (1999) 23-27

Astronomy and Astrophysics

Astrophysics

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

Scientific paper

10.1016/S0370-2693(99)00265-8

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.

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