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arXiv · hep-ph/0202009

Exact Cross Sections for the Neutralino WIMP Pair-Annihilation

Takeshi Nihei·Leszek Roszkowski·Roberto Ruiz de Austri
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Abstract

We derive a full set of exact, analytic expressions for the annihilation of the lightest neutralino pairs into all two-body tree-level final states in the framework of minimal supersymmetry. We make no simplifying assumptions about the neutralino nor about sfermion masses and mixings other than the absence of explicit CP--violating terms. The expressions should be particularly useful in computing the neutralino WIMP relic abundance without the usual approximation of partial wave expansion.

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Takeshi Nihei, Leszek Roszkowski, Roberto Ruiz de Austri. 2002-05-08. Exact Cross Sections for the Neutralino WIMP Pair-Annihilation. https://doi.org/10.1088/1126-6708%2F2002%2F03%2F031

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