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arXiv · hep-ph/9805383

Three-Body Annihilation of Neutralinos Below Two-Body Thresholds

Xuelei Chen·Marc Kamionkowski
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Abstract

We calculate the cross section for s-wave neutralino annihilation to three-body final states below the W^+ W^- and t-bar t thresholds. Such three-body channels may dominate the annihilation cross section if the neutralino mass is not too much less than m_t and m_W respectively. Furthermore, because neutrinos produced in these channels are much more energetic than those from the $b\bar{b}$ or tau^+ tau^- channels, they can dominate the energetic-neutrino fluxes from neutralino annihilation in the Sun or Earth far below these thresholds and significantly enhance the neutrino signal in certain regions of the supersymmetric parameter space.

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Xuelei Chen, Marc Kamionkowski. 1998-08-14. Three-Body Annihilation of Neutralinos Below Two-Body Thresholds. https://doi.org/10.1088/1126-6708%2F1998%2F07%2F001

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