Two-singlet model for light cold dark matter

Journal Article · Sun May 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.095021· OSTI ID:21541649

Abada, Abdessamad ^[1]; Ghaffor, Djamal ^[2]; Nasri, Salah ^[3]

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1. Laboratoire de Physique des Particules et Physique Statistique, Ecole Normale Superieure, BP 92 Vieux Kouba, 16050 Alger (Algeria)
2. Laboratoire de Physique Theorique d'Oran, Es-Senia University, 31000 Oran (Algeria)
3. Physics Department, UAE University, POB 17551, Al Ain (United Arab Emirates)

We extend the standard model by adding two gauge-singlet Z{sub 2}-symmetric scalar fields that interact with visible matter only through the Higgs particle. One is a stable dark matter WIMP, and the other one undergoes a spontaneous breaking of the symmetry that opens new channels for the dark matter annihilation, hence lowering the mass of the WIMP. We study the effects of the observed dark matter relic abundance on the WIMP annihilation cross section and find that in most regions of the parameters' space, light dark matter is viable. We also compare the elastic-scattering cross section of our dark matter candidate off a nucleus with existing (CDMSII and XENON100) and projected (SuperCDMS and XENON1T) experimental exclusion bounds. We find that most of the allowed mass range for light dark matter will be probed by the projected sensitivity of the XENON1T experiment.

• OSTI ID: 21541649
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 9; Other Information: DOI: 10.1103/PhysRevD.83.095021; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
COMPARATIVE EVALUATIONS
CROSS SECTIONS
ELASTIC SCATTERING
GAUGE INVARIANCE
HIGGS BOSONS
MASS
NONLUMINOUS MATTER
NUCLEI
SCALAR FIELDS
SENSITIVITY
STANDARD MODEL
SYMMETRY
SYMMETRY BREAKING
WEAK INTERACTIONS
BASIC INTERACTIONS
BOSONS
ELEMENTARY PARTICLES
EVALUATION
FIELD THEORIES
GRAND UNIFIED THEORY
INTERACTIONS
INVARIANCE PRINCIPLES
MATHEMATICAL MODELS
MATTER
PARTICLE INTERACTIONS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
SCATTERING
UNIFIED GAUGE MODELS