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arXiv · 1909.11686

Revisiting (s)neutrino dark matter in natural SUSY

T. Faber·J. Jones-Pérez·Y. Liu·W. Porod
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Abstract

We study natural supersymmetric scenarios with light right-handed neutrino superfields, and consider the possibility of having either a neutrino or a sneutrino as a dark matter candidate. For the former, we evaluate the possibility of having SUSY corrections on the $\nu_4\to\nu_\ell\gamma$ decay rate, such that the NuStar bounds are relaxed. We find that corrections are too small. For sneutrino dark matter, we consider thermal and non-thermal production, taking into account freeze-out, freeze-in and super-WIMP mechanisms. For the non-thermal case, we find that the $\tilde\nu_R$ can reproduce the observed relic density by adjusting the R-sneutrino mass and Yukawa couplings. For the thermal case, we find the need to extend the model in order to enhance sneutrino annihilations, which we exemplify in a model with an extended gauge symmetry.

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T. Faber, J. Jones-Pérez, Y. Liu, W. Porod. 2019-09-25. Revisiting (s)neutrino dark matter in natural SUSY. https://doi.org/10.1103/physrevd.101.055029

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