18 citations · 29 across the 2 of their papers we have counts for
5 papers
Connecting ANITA Anomalous Events to a Non-thermal Dark Matter Scenario
Debasish Borah, Arnab Dasgupta, Ujjal Kumar Dey +1
The ANtarctic Impulsive Transient Antenna (ANITA) collaboration has observed two EeV-energy, upward going events originating from below the horizon. As no standard model (SM) parti…
An inverse seesaw model with global symmetry
Ujjal Kumar Dey, Takaaki Nomura, Hiroshi Okada
We propose an inverse seesaw model based on hidden global symmetry in which we realize tiny neutrino masses with rather natural manner taking into account relevant experim…
Boosting Assisted Annihilation for a Cosmologically Safe MeV Scale Dark Matter
Ujjal Kumar Dey, Tarak Nath Maity, Tirtha Sankar Ray
Assisted annihilation generates thermal sub-GeV dark matter through a novel annihilation between a pair of dark matter and standard-model-like states, called the "assister". We sho…
Quark mixing in an symmetric model with two Higgs doublets
Dipankar Das, Ujjal Kumar Dey, Palash B. Pal
We construct a model where the smallness of the masses of first quark generations implies the near block diagonal nature of the CKM matrix and vice-versa. For this set-up, we rely…
Leptoquarks: 750 GeV Diphoton Resonance and IceCube Events
Ujjal Kumar Dey, Subhendra Mohanty, Gaurav Tomar
The recent data from ATLAS and CMS hint at a new resonance at around 750 GeV in the diphoton invariant mass distribution. The explanation of the significantly large cross section f…