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Size of the neutralino--nucleon cross--section in the light of a new determination of the pion--nucleon sigma term

A. Bottino·F. Donato·N. Fornengo·S. Scopel
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Abstract

We discuss the implications of a new determination of the pion-nucleon sigma term for the evaluation of the neutralino-nucleon cross-section, and, in turn, for detection rates for relic neutralinos in WIMP direct experiments and in some of the indirect searches. It is shown that the new range for the pion-nucleon sigma term, taken at its face value, favours values of the neutralino-nucleon cross-sections which are sizeably larger than some of the current estimates. Implications for neutralino cosmological properties are derived.

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A. Bottino, F. Donato, N. Fornengo, S. Scopel. 2001-11-19. Size of the neutralino--nucleon cross--section in the light of a new determination of the pion--nucleon sigma term. https://doi.org/10.1016/s0927-6505(02)00107-x

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