Light mass window of inert doublet dark matter with lepton portal interaction
We study phenomenology of a light scalar dark matter (DM). In the model, there is an inert doublet scalar and a singlet Dirac fermion ψ , both charged under a global Z 2 symmetry. The mass of the lightest inert scalar H can be lighter than 10 GeV by imposing appropriate relations between three scala...
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| Veröffentlicht in: | Physical review. D 2024-04, Vol.109 (7), Article 075007 |
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| container_title | Physical review. D |
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| creator | Higuchi, Ryo Iguro, Syuhei Okawa, Shohei Omura, Yuji |
| description | We study phenomenology of a light scalar dark matter (DM). In the model, there is an inert doublet scalar and a singlet Dirac fermion
ψ
, both charged under a global
Z
2
symmetry. The mass of the lightest inert scalar
H
can be lighter than 10 GeV by imposing appropriate relations between three scalar quartic couplings. The lightest
Z
2
odd particle is stable and DM. In this paper, focusing on the parameter space where
H
is lighter than
ψ
and is DM, we discuss DM physics related to relic density, direct detection, indirect detection, collider searches, and other cosmological observations. We clarify differences from the case where
ψ
is instead DM, which has been focused on in previous works. |
| doi_str_mv | 10.1103/PhysRevD.109.075007 |
| format | Article |
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ψ
, both charged under a global
Z
2
symmetry. The mass of the lightest inert scalar
H
can be lighter than 10 GeV by imposing appropriate relations between three scalar quartic couplings. The lightest
Z
2
odd particle is stable and DM. In this paper, focusing on the parameter space where
H
is lighter than
ψ
and is DM, we discuss DM physics related to relic density, direct detection, indirect detection, collider searches, and other cosmological observations. We clarify differences from the case where
ψ
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ψ
, both charged under a global
Z
2
symmetry. The mass of the lightest inert scalar
H
can be lighter than 10 GeV by imposing appropriate relations between three scalar quartic couplings. The lightest
Z
2
odd particle is stable and DM. In this paper, focusing on the parameter space where
H
is lighter than
ψ
and is DM, we discuss DM physics related to relic density, direct detection, indirect detection, collider searches, and other cosmological observations. We clarify differences from the case where
ψ
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ψ
, both charged under a global
Z
2
symmetry. The mass of the lightest inert scalar
H
can be lighter than 10 GeV by imposing appropriate relations between three scalar quartic couplings. The lightest
Z
2
odd particle is stable and DM. In this paper, focusing on the parameter space where
H
is lighter than
ψ
and is DM, we discuss DM physics related to relic density, direct detection, indirect detection, collider searches, and other cosmological observations. We clarify differences from the case where
ψ
is instead DM, which has been focused on in previous works.</abstract><doi>10.1103/PhysRevD.109.075007</doi><orcidid>https://orcid.org/0000-0002-6454-4539</orcidid><orcidid>https://orcid.org/0000-0002-8295-9623</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
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| ispartof | Physical review. D, 2024-04, Vol.109 (7), Article 075007 |
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| language | eng |
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| source | American Physical Society Journals |
| title | Light mass window of inert doublet dark matter with lepton portal interaction |
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