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Dark Matter Capture in Supernovae Modifies Dark Photon Cooling Bounds
Aritra Gupta, Manibrata Sen
Core-collapse supernovae serve as powerful probes of light, weakly coupled particles, such as dark photons. The conventional SN1987A cooling bound constrains the dark photon mass-m…
Seesaw determination of the dark matter relic density
Rupert Coy, Aritra Gupta, Thomas Hambye
In this article, we show that in the usual type-I seesaw framework, augmented solely by a neutrino portal interaction, the dark matter (DM) relic density can be created through fre…
Observing the thermalization of dark matter in neutron stars
Raghuveer Garani, Aritra Gupta, Nirmal Raj
A promising probe to unmask particle dark matter is to observe its effect on neutron stars, the prospects of which depend critically on whether captured dark matter thermalizes in…
Dark matter capture in celestial objects: light mediators, self-interactions, and complementarity with direct detection
Basudeb Dasgupta, Aritra Gupta, Anupam Ray
We generalize the formalism for DM capture in celestial bodies to account for arbitrary mediator mass, and update the existing and projected astrophysical constraints on DM-nucleon…
Scope of strongly self-interacting thermal WIMPs in a minimal extension and its future prospects
Rahool Kumar Barman, Biplob Bhattacherjee, Arindam Chatterjee +2
In this work we have considered a minimal extension of Standard Model by a local gauge group in order to accommodate a stable (fermionic) Dark Matter (DM) candidate. We have…
A New Viable Region of Inert Higgs Doublet Dark Matter Model with Scotogenic Extension
Debasish Borah, Aritra Gupta
We explore the intermediate dark matter mass regime of the inert Higgs doublet model (IHDM) by extending the model with three copies of right handed singlet neutrinos. The in built…