Title
Revisiting neutrino and sneutrino dark matter in natural SUSY scenarios
Date Issued
01 March 2020
Access level
open access
Resource Type
journal article
Author(s)
Publisher(s)
American Physical Society
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 ν4→ν γ decay rate, such that the NuStar bounds are relaxed. We find that corrections are too small. For sneutrino dark matter, we consider thermal and nonthermal production, taking into account freeze-out, freeze-in, and super-weakly interacting massive particles mechanisms. For the nonthermal case, we find that the νR 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.
Volume
101
Issue
5
Language
English
OCDE Knowledge area
Física atómica, molecular y química
Scopus EID
2-s2.0-85083426033
Source
Physical Review D
ISSN of the container
24700010
Source funding
Sponsor(s)
We would like to thank Nicolas Bernal and Carlos Yaguna for discussions. T. F., Y. L., and W. P. have been supported by DFG, project no. PO-1337/7-1, and by DAAD, project no. 57395885. J. J. P. acknowledges funding by the Dirección de Gestión de la Investigación at Pontificia Universidad Católica del Perú (PUCP), through Grant No. DGI-2015-3-0026, and by the DAAD-CONCYTEC project no. 131-2017-FONDECYT.
Sources of information:
Directorio de Producción Científica
Scopus