Inverse seesaw and portal dark matter
Inverse seesaw and portal dark matter
We study the phenomenology of the inverse seesaw mechanism in the scalar-Higgs portal dark matter model. The model is an extension of the Standard Model including two additional neutrinos, a singlet scalar and a fermionic dark matter. We consider the inverse seesaw mechanism where the mass of 2 additional neutrinos are made dynamic by the singlet scalar. We found that the natural scale for the scalar vacuum expectation value is naturally close to the weak scale. Motivating by this fact, we focus on the possibility of the singlet scalar connecting with dark matter, i.e., the scalar is also the mediator between dark sector and the Standard Model. We perform a numerical analysis over the parameter space subject to the indirect and direct detection constraints. The feasible region of the parameter space will be discussed.
hep-ph, astro-ph.HE
Pongkitivanichkul, Chakrit
17949b4f-abd5-4ad1-8b6a-6b787ec09ea1
Thongyoi, Nakorn
c42aa0b7-f0b7-40e6-9e0e-3aadda469861
Uttayarat, Patipan
ace294ec-706b-4bda-bf14-421dc46b5790
Pongkitivanichkul, Chakrit
17949b4f-abd5-4ad1-8b6a-6b787ec09ea1
Thongyoi, Nakorn
c42aa0b7-f0b7-40e6-9e0e-3aadda469861
Uttayarat, Patipan
ace294ec-706b-4bda-bf14-421dc46b5790
Pongkitivanichkul, Chakrit, Thongyoi, Nakorn and Uttayarat, Patipan
(2019)
Inverse seesaw and portal dark matter.
Phys. Rev. D, 100, [035034].
(doi:10.1103/PhysRevD.100.035034).
Abstract
We study the phenomenology of the inverse seesaw mechanism in the scalar-Higgs portal dark matter model. The model is an extension of the Standard Model including two additional neutrinos, a singlet scalar and a fermionic dark matter. We consider the inverse seesaw mechanism where the mass of 2 additional neutrinos are made dynamic by the singlet scalar. We found that the natural scale for the scalar vacuum expectation value is naturally close to the weak scale. Motivating by this fact, we focus on the possibility of the singlet scalar connecting with dark matter, i.e., the scalar is also the mediator between dark sector and the Standard Model. We perform a numerical analysis over the parameter space subject to the indirect and direct detection constraints. The feasible region of the parameter space will be discussed.
Text
1905.13224v2
- Author's Original
Text
PhysRevD.100.035034
- Version of Record
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e-pub ahead of print date: 28 May 2019
Additional Information:
5 figures
Keywords:
hep-ph, astro-ph.HE
Identifiers
Local EPrints ID: 487376
URI: http://eprints.soton.ac.uk/id/eprint/487376
ISSN: 2470-0010
PURE UUID: e5a6485f-be4f-4fed-8da8-19a1ab12d99c
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Date deposited: 20 Feb 2024 02:40
Last modified: 18 Mar 2024 03:55
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Author:
Chakrit Pongkitivanichkul
Author:
Patipan Uttayarat
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