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Sterile neutrino portal to Dark Matter I: the U(1) B-L case

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journal contribution
posted on 2023-06-09, 07:27 authored by Miguel Escudero, Nuria Rius, Veronica Sanz
In this paper we explore the possibility that the sterile neutrino and Dark Matter sectors in the Universe have a common origin. We study the consequences of this assumption in the simple case of coupling the dark sector to the Standard Model via a global U(1)B-L, broken down spontaneously by a dark scalar. This dark scalar provides masses to the dark fermions and communicates with the Higgs via a Higgs portal coupling. We find an interesting interplay between Dark Matter annihilation to dark scalars — the CP-even that mixes with the Higgs and the CP-odd which becomes a Goldstone boson, the Majoron — and heavy neutrinos, as well as collider probes via the coupling to the Higgs. Moreover, Dark Matter annihilation into sterile neutrinos and its subsequent decay to gauge bosons and quarks, charged leptons or neutrinos lead to indirect detection signatures which are close to current bounds on the gamma ray flux from the galactic center and dwarf galaxies.

Funding

Particle Physics Theory at Royal Holloway and Sussex; G0742; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/J000477/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1126-6708

Publisher

Springer Verlag

Issue

2

Volume

2017

Article number

a45

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Theoretical Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-07-27

First Open Access (FOA) Date

2017-07-27

First Compliant Deposit (FCD) Date

2017-07-27

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