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Title: Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector

Abstract

Sterile neutrino with mass of several keV can be the cosmological dark matter, can explain the observed velocities of pulsars, and can play an important role in the formation of the first stars. We describe the production of sterile neutrinos in a model with an extended Higgs sector, in which the Majorana mass term is generated by the vacuum expectation value of a gauge-singlet Higgs boson. In this model the relic abundance of sterile neutrinos does not necessarily depend on their mixing angles, the free-streaming length can be much smaller than in the case of warm dark matter produced by neutrino oscillations, and, therefore, some of the previously quoted bounds do not apply. The presence of the gauge singlet in the Higgs sector has important implications for the electroweak phase transition, baryogenesis, and the upcoming experiments at the Large Hadron Collider and a Linear Collider.

Authors:
;  [1]
  1. Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States)
Publication Date:
OSTI Identifier:
21249867
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 77; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevD.77.065014; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CERN LHC; EXPECTATION VALUE; HIGGS MODEL; KEV RANGE 01-10; LINEAR COLLIDERS; MASS; NEUTRINO OSCILLATION; NEUTRINOS; NONLUMINOUS MATTER; PHASE TRANSFORMATIONS; PULSARS; STARS; VELOCITY; WEINBERG ANGLE

Citation Formats

Petraki, Kalliopi, and Kusenko, Alexander. Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector. United States: N. p., 2008. Web. doi:10.1103/PHYSREVD.77.065014.
Petraki, Kalliopi, & Kusenko, Alexander. Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector. United States. https://doi.org/10.1103/PHYSREVD.77.065014
Petraki, Kalliopi, and Kusenko, Alexander. Sat . "Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector". United States. https://doi.org/10.1103/PHYSREVD.77.065014.
@article{osti_21249867,
title = {Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector},
author = {Petraki, Kalliopi and Kusenko, Alexander},
abstractNote = {Sterile neutrino with mass of several keV can be the cosmological dark matter, can explain the observed velocities of pulsars, and can play an important role in the formation of the first stars. We describe the production of sterile neutrinos in a model with an extended Higgs sector, in which the Majorana mass term is generated by the vacuum expectation value of a gauge-singlet Higgs boson. In this model the relic abundance of sterile neutrinos does not necessarily depend on their mixing angles, the free-streaming length can be much smaller than in the case of warm dark matter produced by neutrino oscillations, and, therefore, some of the previously quoted bounds do not apply. The presence of the gauge singlet in the Higgs sector has important implications for the electroweak phase transition, baryogenesis, and the upcoming experiments at the Large Hadron Collider and a Linear Collider.},
doi = {10.1103/PHYSREVD.77.065014},
url = {https://www.osti.gov/biblio/21249867}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 6,
volume = 77,
place = {United States},
year = {2008},
month = {3}
}