13 citations · 21 across the 13 of their papers we have counts for
15 papers
An early dominance: dark matter, gravitational waves & collider probes
Basabendu Barman, Nayan Das, Partha Kumar Paul +1
In the minimal anomaly-free gauged BL extension of the Standard Model (SM), we consider a scenario in which the energy density of the new Abelian gauge boson dominates the Unive…
QCD axion misalignment during reheating
Disha Bandyopadhyay, Debasish Borah, Nayan Das
We study the production of QCD axion dark matter (DM) via vacuum and kinetic misalignment mechanisms during an extended reheating period after the end of slow-roll inflation. With…
Leptogenesis with sub-electroweak-scale reheating temperature
Basabendu Barman, Arindam Basu, Debasish Borah +1
We study the generation of the baryon asymmetry of the Universe via leptogenesis during the post-inflationary reheating epoch, considering reheating temperatures below the temperat…
Multi-peaked high-frequency gravitational waves from PBH-assisted leptogenesis
Debasish Borah, Nayan Das
We study the possibility of probing non-thermal leptogenesis with multi-peaked high-frequency gravitational waves (GW) by considering heavy right-handed neutrino (RHN) produced fro…
High-Quality Axion Dark Matter at Gravitational Wave Interferometers
Disha Bandyopadhyay, Debasish Borah, Nayan Das +1
Gravitational effects are known to violate global symmetries, threatening the Peccei-Quinn (PQ) solution to the strong CP problem. Ultraviolet completions featuring a gauged …
Multi-messenger FIMP
Debasish Borah, Nayan Das, Sahabub Jahedi +1
We propose a multi-messenger frontier probe of non-thermal or freeze-in massive particle (FIMP) dark matter (DM) by considering an effective field theory (EFT) setup. Assuming lept…
Possible origin of the KM3-230213A neutrino event from dark matter decay
Debasish Borah, Nayan Das, Nobuchika Okada +1
We study the possibility of the highest energy neutrino event with 220 PeV energy, detected recently by the KM3NeT experiment to be originating from heavy dark matter (DM) decay. C…
Axion misalignment with memory-burdened PBH
Disha Bandyopadhyay, Debasish Borah, Nayan Das
We study the possibility of producing axion dark matter (DM) via misalignment mechanisms in a non-standard cosmological era dominated by ultra-light primordial black holes (PBH). W…
Successful cogenesis of baryon and dark matter from memory-burdened PBH
Debasish Borah, Nayan Das
We study the possibility of producing the observed baryon asymmetry of the Universe (BAU) and dark matter (DM) from evaporating primordial black holes (PBH) beyond the semi-classic…
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…
Collider and CMB complementarity of leptophilic dark matter with light Dirac neutrinos
Debasish Borah, Nayan Das, Sahabub Jahedi +1
We study the discovery prospects of leptophilic dark matter (DM) in future lepton colliders by considering the light neutrinos to be of Dirac type. Adopting an effective field theo…
Observable gravitational waves and with global lepton number symmetry and dark matter
Debasish Borah, Nayan Das, Rishav Roshan
We study the possibility of testing a dark matter (DM) scenario embedded in a global lepton number symmetry via gravitational waves (GW) and cosmic microwave background (C…
The Amaterasu particle: constraining the superheavy dark matter origin of UHECRs
Prantik Sarmah, Nayan Das, Debasish Borah +2
Amaterasu, the second most energetic ( EeV) cosmic ray particle has been recently detected by the Telescope Array (TA) surface detector. The origin of the TA Amaterasu event i…
Cogenesis of baryon and dark matter with PBH and QCD axion
Debasish Borah, Nayan Das, Suruj Jyoti Das +1
With entropy injection, an early matter-dominated epoch (EMD) impels the axion decay constant towards larger values to produce correct axion dark matter (DM) abundance, there…
Light Dirac neutrino portal dark matter with gauged symmetry
Nayan Das, Debasish Borah
We propose a gauged version of the light Dirac neutrino portal dark matter. The symmetry provides a UV completion by naturally accommodating three right h…