Work

Vector dark matter in a U ( 1 ) X extended 2HDM

Year: 2025

Type: article

Abstract: We investigate the possibility of having a vector boson dark matter in a U ( 1 ) X extended two-Higgs doublet model (2HDM) setup. The gauge boson gains mass when a Standard Model (SM) singlet complex scalar, which is charged under the dark U ( 1 ) X symmetry, acquires a vacuum expectation value. This scalar acts as the connection between the SM sector and DM via the Higgs portal. An additional exact charge conjugation symmetry inhibits the mixing of this gauge boson with the photon, thereby confirming the stability of DM. On the other hand, 2HDM with type-I Z 2 restriction can offer a nonstandard Higgs in the lighter mass range. This freedom allows us to accommodate dark matter mass in the (40–60)-GeV regime where the direct detection constraints are strongest. We study the dark matter phenomenology of such a model while taking care of all possible theoretical and experimental constraints.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/3l8z-hgt4

Authors: Nandini Das, Juhi Dutta, Dilip Kumar Ghosh, Santosh Kumar Rai

Institutions: Indian Association for the Cultivation of Science, Institute of Mathematical Sciences, Institute of Mathematical Sciences, University of Oklahoma, Harish-Chandra Research Institute

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid