The last refuge of mixed wino-Higgsino dark matter

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 μ > 0 nearly the entire parameter space considered is excluded, while for μ < 0 a substantial region is still allowed, provided conservative assumptions on astrophysical uncertainties are adopted.
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Journal of High Energy Physics, Springer Verlag (Germany), 2017, 2017 (1), pp.2. 〈10.1007/JHEP01(2017)002〉
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Soumis le : lundi 16 avril 2018 - 10:42:12
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M. Beneke, Aoife Bharucha, Andrzej Hryczuk, S. Recksiegel, P. Ruiz Femenia. The last refuge of mixed wino-Higgsino dark matter. Journal of High Energy Physics, Springer Verlag (Germany), 2017, 2017 (1), pp.2. 〈10.1007/JHEP01(2017)002〉. 〈hal-01401473〉

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