Work

Heavy neutrino as dark matter in a neutrinophilic U(1) model

Year: 2024

Type: article

Abstract: We study the prospect of heavy singlet neutrinos as a dark matter (DM) candidate within a neutrinophilic U(1) model, where the Standard Model (SM) is extended with a U(1) gauge symmetry, and neutrino mass and oscillation parameters are explained through an inverse see-saw mechanism. The lightest of the heavy neutrinos plays the role of the DM, while the newly introduced scalars and the extra gauge boson $$Z'$$ Z ′ act as mediators between the dark sector and the SM sector. We show the range of model parameters where this DM candidate can be accommodated in the Weakly Interacting Massive Particle (WIMP) or Feebly Interacting Massive Particle (FIMP) scenario. The observed DM relic density (DMRD) is achieved via the new gauge boson and singlet scalar portals in the WIMP scenario, whereas within the FIMP scenario, these two particles assume a distinct yet pivotal role in generating the observed DMRD.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-024-13407-z

Authors: Waleed Abdallah, Anjan Kumar Barik, Santosh Kumar Rai, Tousik Samui

Institutions: Cairo University, Homi Bhabha National Institute, Harish-Chandra Research Institute, Indian Institute of Science Education and Research Kolkata, Institute of Mathematical Sciences

Language: English

Topic: Dark Matter and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funder: Indian Institute of Science

OpenAlex ID: W4403559391

FWCI: 0.144

Cites: 75

Cited by: 2

Related to: 10