Effects of Squark Processes on the Axino CDM Abundance

Details Effects of Squark Processes on the Axino CDM Abundance Effects of Squark Processes on the Axino CDM Abundance

2002-06-13

arxiv.org/abs/hep-ph/0206119v1

JHEP 0207 (2002) 023

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 9 figures, uses JHEP3.cls

Scientific paper

10.1088/1126-6708/2002/07/023

We investigate the role of an effective dimension-4 axino-quark-squark coupling in the thermal processes producing stable cold axino relics in the early Universe. We find that, while the induced squark and quark scattering processes are always negligible, squark decays become important in the case of low reheat temperature and large gluino mass. The effect can tighten the bounds on the scenario from the requirement that cold dark matter axinos do not overclose the Universe.

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