TY  - JOUR
AU  - Kim, J. S.
AU  - Lopez-Fogliani, D. E.
AU  - Perez, A. D.
AU  - Ruiz de Austri, R.
PY  - 2023
DA  - 2023//
TI  - Right-handed sneutrino and gravitino multicomponent dark matter in light of neutrino detectors
T2  - J. Cosmol. Astropart. Phys.
JO  - Journal of Cosmology and Astroparticle Physics
SP  - 050
EP  - 32pp
VL  - 04
IS  - 4
PB  - IOP Publishing Ltd
KW  - dark matter theory
KW  - dark matter experiments
KW  - neutrino detectors
AB  - We investigate the possibility that right-handed (RH) sneutrinos and gravitinos can coexist and explain the dark matter (DM) problem. We compare extensions of the minimal supersymmetric standard model (MSSM) and the next-to-MSSM (NMSSM) adding RH neutrinos superfields, with special emphasis on the latter. If the gravitino is the lightest supersymmetric particle (LSP) and the RH sneutrino the next-to-LSP (NLSP), the heavier particle decays to the former plus left-handed (LH) neutrinos through the mixing between the scalar partners of the LH and RH neutrinos. However, the interaction is suppressed by the Planck mass, and if the LH-RH sneutrino mixing parameter is small, << O(10-2), a long-lived RH sneutrino NLSP is possible even surpassing the age of the Universe. As a byproduct, the NLSP to LSP decay produces monochromatic neutrinos in the ballpark of current and planned neutrino telescopes like Super-Kamiokande, IceCube and Antares that we use to set constraints and show prospects of detection. In the NMSSM+RHN, assuming a gluino mass parameter M3 = 3 TeV we found the following lower limits for the gravitino mass m3/2 >= 1-600 GeV and the reheating temperature TR >= 105-3 x 107 GeV, for m nu similar to R similar to 10-800 GeV. If we take M3 = 10 TeV, then the limits on TR are relaxed by one order of magnitude.
SN  - 1475-7516
UR  - https://arxiv.org/abs/2206.04715
UR  - https://doi.org/10.1088/1475-7516/2023/04/050
DO  - 10.1088/1475-7516/2023/04/050
LA  - English
N1  - WOS:000975382300001
ID  - Kim_etal2023
ER  -