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The lightest right-handed (RH) sneutrino in the BLSSM model with inverse seesaw is an intriguing candidate for dark matter.However, its relic abundance typically exceeds the observational limits.We show that when the RH sneutrino mass exceeds 600 GeV and there is a strong coupling with the light Higgs boson, the Sommerfeld Effect (SE) is significantly enhanced.We emphasize that this effect modifies the RH-sneutrino relic abundance and makes it a viable dark matter up to a mass of order 2.5 TeV.
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elsheshtawy et al. (2023) studied this question.
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