31 citations · 31 across the 16 of their papers we have counts for
18 papers
Matter-Antimatter Asymmetry from Dirac-Majorana Flip-Flop
Debasish Borah, Arnab Dasgupta, Debalina Nandy +2
The observed matter-antimatter asymmetry can be generated dynamically via leptogenesis, where a non-zero lepton asymmetry is generated first and then gets converted into baryon asy…
Charged scalar portal dark matter with non-restoration and gravitational waves
Debasish Borah, Dhruv Ringe, Indrajit Saha
We explore the possibility of reviving scalar singlet dark matter (DM) with a minimal extension by a charged singlet scalar which also leads to hypercharge non-restoration in the e…
Singlet-Doublet fermion origin of dark matter, neutrino mass and inverse first-order electroweak phase transition
Debasish Borah, Indrajit Saha, Sujit Kumar Sahoo +2
We study the possibility of an inverse first-order electroweak phase transition (IFOEWPT) and observable gravitational waves (GW) in a radiative neutrino mass model of scotogenic t…
Dark Phoenix: dark matter relic from its own decay
Debasish Borah, Satyabrata Mahapatra, Indrajit Saha +2
We propose a novel mechanism for generating correct relic of dark matter (DM) which otherwise gets thermally overproduced from the conventional freeze-out mechanism. The mechanism,…
Probing Dynamical Inverse Seesaw with Low-frequency Gravitational Waves
Debasish Borah, Sounak Dutta, Partha Kumar Paul +2
We study the possibility of probing the dynamical inverse seesaw mechanism for the origin of light neutrino masses via the detection of stochastic gravitational waves (GW) in the l…
Imprint of matter-antimatter asymmetry on collapsing domain walls
Dipendu Bhandari, Debasish Borah, Indrajit Saha
Spontaneous breaking of discrete symmetries play non-trivial role in many well-motivated particle physics models. However, it leads to a network of cosmologically unwanted domain w…
Twin-peaked gravitational wave signals from a phase transition
Rishav Roshan, Indrajit Saha
We compute the gravitational wave spectrum from a phase transition associated with the spontaneous breaking of a symmetry. If the transition is second-orde…
Gravitational waves from seesaw assisted collapsing domain walls
Debasish Borah, Indrajit Saha
Spontaneous breaking of discrete symmetries like leads to the formation of stable topological defects such as domain walls which, if allowed to dominate, can potentially be i…
Electroweak phase transition in SMEFT: Gravitational wave and collider complementarity
Sahabub Jahedi, Indrajit Saha, Abhik Sarkar
We study the first-order electroweak phase transition (FO-EWPT) within the Standard Model Effective Field Theory (SMEFT) framework induced by dimension-6 operators. Such phenomena…
Gravitational wave signatures of dark sector portal leptogenesis
Debasish Borah, Devabrat Mahanta, Indrajit Saha
We study the possibility of probing leptogenesis via stochastic gravitational waves (GW) arising from a dark sector assisted first-order electroweak phase transition. The same dark…
Filtered cogenesis of PBH dark matter and baryons
Debasish Borah, Indrajit Saha
We propose a novel cogenesis of baryon and dark matter (DM) in the Universe by utilising a first-order phase transition (FOPT) in the dark sector containing an asymmetric Dirac fer…
Large neutrino asymmetry from forbidden decay of dark matter
Debasish Borah, Nayan Das, Indrajit Saha
Dark matter (DM), in spite of being stable or long-lived on cosmological scales, can decay in the early Universe due to finite-temperature effects. In particular, a first order pha…
New realisation of light thermal dark matter with enhanced detection prospects
Amit Adhikary, Debasish Borah, Satyabrata Mahapatra +3
Light dark matter (DM) with mass around the GeV scale faces weaker bounds from direct detection experiments. If DM couples strongly to a light mediator, it is possible to have obse…
Dark matter from phase transition generated PBH evaporation with gravitational waves signatures
Debasish Borah, Suruj Jyoti Das, Indrajit Saha
We study the possibility of generating dark matter (DM) purely from ultra-light primordial black hole (PBH) evaporation with the latter being produced from a first order phase tran…
Scale of Dirac leptogenesis and left-right symmetry in the light of recent PTA results
Basabendu Barman, Debasish Borah, Suruj Jyoti Das +1
Motivated by the recent release of new results from five different pulsar timing array (PTA) experiments claiming to have found compelling evidence for primordial gravitational wav…
Baryon asymmetry from dark matter decay in the vicinity of a phase transition
Debasish Borah, Arnab Dasgupta, Matthew Knauss +1
We propose a novel framework where baryon asymmetry of the universe can arise due to forbidden decay of dark matter (DM) enabled by finite-temperature effects in the vicinity of a…
LIGO-VIRGO constraints on dark matter and leptogenesis triggered by a first order phase transition at high scale
Debasish Borah, Arnab Dasgupta, Indrajit Saha
We study the possibility of constraining a scenario with high scale first order phase transition (FOPT) responsible for the cogenesis of baryon and dark matter using gravitational…
Leptogenesis and Dark Matter Through Relativistic Bubble Walls with Observable Gravitational Waves
Debasish Borah, Arnab Dasgupta, Indrajit Saha
We study a scenario where both dark matter and heavy right handed neutrino (RHN) responsible for leptogenesis acquire masses by crossing the relativistic bubble walls formed as a r…