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arXiv · 1611.00804

The last refuge of mixed wino-Higgsino dark matter

Martin Beneke·Aoife Bharucha·Andrzej Hryczuk·Stefan Recksiegel·Pedro Ruiz-Femenia
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Abstract

We delineate the allowed parameter and mass range for a wino-like dark matter particle containing some Higgsino admixture in the MSSM by analysing the constraints from diffuse gamma-rays from the dwarf spheroidal galaxies, galactic cosmic rays, direct detection and cosmic microwave background anisotropies. A complete calculation of the Sommerfeld effect for the mixed-neutralino case is performed. We find that the combination of direct and indirect searches poses significant restrictions on the thermally produced wino-Higgsino dark matter with correct relic density. For $\mu>0$ nearly the entire parameter space considered is excluded, while for $\mu<0$ a substantial region is still allowed, provided conservative assumptions on astrophysical uncertainties are adopted.

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Martin Beneke, Aoife Bharucha, Andrzej Hryczuk, Stefan Recksiegel, Pedro Ruiz-Femenia. 2016-11-02. The last refuge of mixed wino-Higgsino dark matter. https://doi.org/10.1007/jhep01(2017)002

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