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346 papers
Parallel Seesaw Mechanisms for Neutrinos and Freeze-In Long-Lived Dark Matter
Ernest Ma
If dark matter is light, it may be due to a seesaw mechanism just as neutrinos are. It is postulated that both originate from the same type of heavy fermion anchors, either singlet…
Dark Gauge Symmetry
Debasish Borah, Ernest Ma, Dibyendu Nanda
The dark sector is postulated to be invariant under an gauge symmetry, spontaneously broken by a Higgs quadruplet to a conserved residual symmetry. The res…
Type III Neutrino Seesaw, Freeze-In Long-Lived Dark Matter, and the Mass Shift
Ernest Ma
In the framework of seesaw neutrino masses from heavy fermion triplets , the addition of a light fermion singlet and a heavy scalar triplet has s…
Nested Radiative Seesaw Masses for Dark Matter and Neutrinos
Talal Ahmed Chowdhury, Shaaban Khalil, Ernest Ma
The scotogenic model of neutrino mass is modified so that the dark Majorana fermion singlet which makes the neutrino massive is itself generated in one loop. This is accomplish…
Dark Gauge Symmetry and Scotogenic Dirac Neutrinos
Debasish Borah, Ernest Ma, Dibyendu Nanda
Dark matter is postulated to transform under the non-Abelian gauge symmetry. Its connection to Dirac neutrino masses is explored.
Connecting Dark Gauge Symmetry to the Standard Model
Ernest Ma
Dark matter is postulated to be a neutral Dirac fermion, charged under a dark gauge symmetry. Scalar partners of the quarks and leptons are also charged under . Th…