Probing the Dark Matter of Three-loop Radiative Neutrino Mass Generation Model with the Cherenkov Telescope Array. (arXiv:2008.06602v2 [hep-ph] UPDATED)

Probing the Dark Matter of Three-loop Radiative Neutrino Mass Generation Model with the Cherenkov Telescope Array. (arXiv:2008.06602v2 [hep-ph] UPDATED)
<a href="http://arxiv.org/find/hep-ph/1/au:+Chowdhury_T/0/1/0/all/0/1">Talal Ahmed Chowdhury</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Hassan_S/0/1/0/all/0/1">Saquib Hassan</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Hossain_J/0/1/0/all/0/1">Jahid Hossain</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Nasri_S/0/1/0/all/0/1">Salah Nasri</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Shamim_M/0/1/0/all/0/1">Mahmud Ashraf Shamim</a>

We investigate the prospect of detecting the Dark Matter (DM) candidate in
the three-loop radiative neutrino mass generation model extended with large
electroweak multiplets of the Standard Model (SM) gauge group, at the future
imaging atmospheric Cherenkov telescope known as the Cherenkov Telescope Array
(CTA). We find that the addition of such large electroweak multiplets leads to
a sizable Sommerfeld enhanced annihilation of the DM with $O(text{TeV})$ mass,
into the SM gauge bosons which results in continuum and line-like spectra of
very high energy (VHE) gamma-rays, and therefore becomes observable for the
CTA. We determine the viable models by setting the upper limit on the
$SU(2)_{L}$ isospin of the multiplets from the partial-wave unitarity
constraints and the appearance of low-scale Landau pole in the gauge coupling.
Afterwards, by considering the continuum VHE gamma-rays produced from the DM
annihilation at the Galactic center, we probe the parameter space of the model
using the sensitivity reach of the CTA.

We investigate the prospect of detecting the Dark Matter (DM) candidate in
the three-loop radiative neutrino mass generation model extended with large
electroweak multiplets of the Standard Model (SM) gauge group, at the future
imaging atmospheric Cherenkov telescope known as the Cherenkov Telescope Array
(CTA). We find that the addition of such large electroweak multiplets leads to
a sizable Sommerfeld enhanced annihilation of the DM with $O(text{TeV})$ mass,
into the SM gauge bosons which results in continuum and line-like spectra of
very high energy (VHE) gamma-rays, and therefore becomes observable for the
CTA. We determine the viable models by setting the upper limit on the
$SU(2)_{L}$ isospin of the multiplets from the partial-wave unitarity
constraints and the appearance of low-scale Landau pole in the gauge coupling.
Afterwards, by considering the continuum VHE gamma-rays produced from the DM
annihilation at the Galactic center, we probe the parameter space of the model
using the sensitivity reach of the CTA.

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