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

Talal Ahmed Chowdhury, Salah Nasri

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

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 γZ 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.

Original languageEnglish
Article number041
JournalJournal of Cosmology and Astroparticle Physics
Volume2017
Issue number1
DOIs
Publication statusPublished - Jan 20 2017

Keywords

  • Dark matter theory
  • Gamma ray experiments

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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