6 papers
Complex Scalar Singlet Model: Electroweak Phase Transition and Gravitational Waves
Dilip Kumar Ghosh, Debadrita Mukherjee, Koustav Mukherjee +1
The Standard Model (SM) cannot explain the observed baryon asymmetry of the Universe (BAU), thus driving the need for physics beyond the SM, which can generate electroweak baryogen…
Impact of Non-Thermal Leptogenesis with Early Matter Domination on Gravitational Waves from First-order Phase Transition
Dilip Kumar Ghosh, Anish Ghoshal, Koustav Mukherjee +2
We study the impact of non-thermal leptogenesis on the spectrum of gravitational waves (GWs) produced by a strong first-order phase transition in the early Universe. We consider a…
Vector Dark Matter in a extended 2HDM
Nandini Das, Juhi Dutta, Dilip Kumar Ghosh +1
We investigate the possibility of having a vector boson dark matter in a extended two-Higgs-doublet model (2HDM) setup. The gauge boson gains mass when a SM singlet comple…
Probing the low mass pseudoscalar in flipped Two Higgs Doublet Model
Dilip Kumar Ghosh, Biswarup Mukhopadhyaya, Sirshendu Samanta +1
The phenomenology of the flipped two-Higgs-doublet model (2HDM) is relatively less explored so far, as compared to the other, commonly discussed, types. It is found that this scena…
Probing Light Particles With Optically Trapped Sensors Through Nucleon Scattering
Bhaskar Dutta, Dilip Kumar Ghosh, Sk Jeesun
Optically levitated nanospheres are highly sensitive to the motion of their center of mass even under small momentum transfer. We propose detecting exotic particles via nucleon sca…
Boosted Dark Matter Driven by Cosmic Rays and Diffuse Supernova Neutrinos
Dilip Kumar Ghosh, Tushar Gupta, Matti Heikinheimo +2
Direct detection of light dark matter can be significantly enhanced by up-scattering of dark matter with energetic particles in the cosmic ambient. This boosted dark matter flux ca…