paper

Gaugino and Higgsino Coannihilations I: Neutralino-Neutralino Interactions

arXiv:hep-ph/0210041 · doi:10.1088/1126-6708/2003/02/047

Abstract

We present exact analytic cross sections for all neutralino-neutralino coannihilations into two-body tree level final states. These expressions allow the calculation of important contributions to the neutralino relic abundance over large regions of mSUGRA parameter space and are particularly useful in theories with non-universal gaugino masses.

50 pages; table of contents deleted and references added; typographical errors corrected, now agrees completely with hep-ph/0202009 in the limit of identical neutralinos

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