TY - JOUR
T1 - The Sommerfeld enhancement in the scotogenic model with large electroweak scalar multiplets
AU - Chowdhury, Talal Ahmed
AU - Nasri, Salah
N1 - Publisher Copyright:
© 2017 IOP Publishing Ltd and Sissa Medialab srl.
PY - 2017/1/20
Y1 - 2017/1/20
N2 - 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.
AB - 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.
KW - Dark matter theory
KW - Gamma ray experiments
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U2 - 10.1088/1475-7516/2017/01/041
DO - 10.1088/1475-7516/2017/01/041
M3 - Article
AN - SCOPUS:85012863596
SN - 1475-7516
VL - 2017
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 1
M1 - 041
ER -