@Article{Kim_etal2023,
author="Kim, J. S.
and Lopez-Fogliani, D. E.
and Perez, A. D.
and Ruiz de Austri, R.",
title="Right-handed sneutrino and gravitino multicomponent dark matter in light of neutrino detectors",
journal="Journal of Cosmology and Astroparticle Physics",
year="2023",
publisher="IOP Publishing Ltd",
volume="04",
number="4",
pages="050--32pp",
optkeywords="dark matter theory; dark matter experiments; neutrino detectors",
abstract="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.",
optnote="WOS:000975382300001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5523), last updated on Sat, 27 May 2023 09:38:28 +0000",
issn="1475-7516",
doi="10.1088/1475-7516/2023/04/050",
opturl="https://arxiv.org/abs/2206.04715",
opturl="https://doi.org/10.1088/1475-7516/2023/04/050",
language="English"
}