The last refuge of mixed wino-Higgsino dark matter

M. Beneke (1) , Aoife Bharucha (2, 3) , Andrzej Hryczuk (4) , S. Recksiegel (1) , P. Ruiz Femenia (5)

1 TUM - Technische Universität Munchen - Technical University Munich - Université Technique de Munich
2 CPT - Centre de Physique Théorique - UMR 7332
3 CPT - E1 Physique des particules
4 UiO - University of Oslo
5 IFIC - Instituto de Fisica Corpuscular

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.

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

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, 2017, 2017 (1), pp.2. ⟨10.1007/JHEP01(2017)002⟩. ⟨hal-01401473⟩