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- W4226368996 abstract "Dark matter can decay via gravity portals and contribute a minor decay (MD) width. This paper proposes that nonminimal coupling between the Higgs field and gravity can lead to additional gravity-Higgs portals for gravitational dark matter to decay and contribute additional decay (AD) width. For scalar dark matter candidates with a mass less than 5 TeV, the decay branching ratios are almost independent of whether dark matter decay through gravity portals or gravity-Higgs portals; therefore, it is almost impossible to distinguish gravity portals from gravity-Higgs portals by observing decay products. For fermionic singlet dark matter candidates, their MD products are diverse, while their AD products are monotonous, only neutrinos and Higgs bosons. As for both dark matter candidates, gravity-Higgs portals prefer to dominate the decay at around several hundred GeV. Besides, for both TeV dark matter candidates, there is still a vast parameter space alive." @default.
- W4226368996 created "2022-05-05" @default.
- W4226368996 creator A5012869559 @default.
- W4226368996 date "2021-12-08" @default.
- W4226368996 modified "2023-09-24" @default.
- W4226368996 title "Gravity-Higgs portal for dark matter decay" @default.
- W4226368996 hasPublicationYear "2021" @default.
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