The Sommerfeld enhancement in the scotogenic model with large electroweak scalar multiplets

Journal Article · Sun Jan 01 00:00:00 EST 2017 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2017/01/041· OSTI ID:22680074

Chowdhury, Talal Ahmed ^[1]; Nasri, Salah ^[2]

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1. Department of Physics, University of Dhaka, P.O. Box 1000, Dhaka (Bangladesh)
2. Department of Physics, UAE University, P.O. Box 17551, Al-Ain (United Arab Emirates)

We investigate the Sommerfeld enhancement (SE) in the generalized scotogenic model with large electroweak multiplets. We focus on scalar dark matter (DM) candidate of the model and compare DM annihilation cross sections to WW , ZZ , γγ and γ Z at present day in the galactic halo for scalar doublet and its immediate generalization, the quartet in their respective viable regions of parameter space. We find that larger multiplet has sizable Sommerfeld enhanced annihilation cross section compared to the doublet and because of that it is more likely to be constrained by the current H.E.S.S. results and future CTA sensitivity limits.

• OSTI ID: 22680074
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2017, Issue 01; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
COMPARATIVE EVALUATIONS
CROSS SECTIONS
MULTIPLETS
NONLUMINOUS MATTER
SENSITIVITY
SIMULATION
SPACE
WEINBERG-SALAM GAUGE MODEL