194 citations · 950 across the 45 of their papers we have counts for
45 papers · 1 filter
Probing Axion Dark Matter via the Chiral Magnetic Effect in Zero-Bias Weyl Semimetals
Debajit Bose, Prataya Chandra, Sudhansu S. Mandal +1
Sub-eV axion dark matter behaves as a coherent classical field that can induce macroscopic current in quantum materials. We explore the possibility of axion detection via the chira…
Constraints on dark matter self-interaction from velocity distribution function in isolated halos
Tirtha Sankar Ray, Sambo Sarkar
Self-interactions facilitate inter-particle redistribution of energy within the dense regions of galactic halos, implying modifications in the density and velocity distribution of…
Cogenesis of visible and dark matter in a scotogenic model
Debajit Bose, Rohan Pramanick, Tirtha Sankar Ray
Within a scotogenic neutrino mass model we explore the cogenesis of matter from the CP violating decay of a heavy -odd right handed neutrino that simultaneously popul…
Neutrinos from captured dark matter in galactic stars
Debajit Bose, Rohan Pramanick, Tirtha Sankar Ray
Sub-GeV neutrinos produced in a stellar core may emerge from main sequence stars, white dwarfs and brown dwarfs producing possible observable signals of dark matter capture. A dist…
Towards a more complete description of hybrid leptogenesis
Rohan Pramanick, Tirtha Sankar Ray, Arunansu Sil
Hybrid leptogenesis framework combining type I and type II seesaw mechanism for neutrino mass necessarily include scattering topologies involving both the scalar triplet and the ri…
Troubles mounting for multipolar dark matter
Debajit Bose, Debtosh Chowdhury, Poulami Mondal +1
In this paper, we revisit the experimental constraints on the multipolar dark matter that has derivative coupling to the visible sector mediated by the Standard Model photon. The m…
Neutrino mass and leptogenesis in a hybrid seesaw model with a spontaneously broken CP
Rohan Pramanick, Tirtha Sankar Ray, Avirup Shaw
We introduce a novel hybrid framework combining type I and type II seesaw models for neutrino mass where a complex vacuum expectation value of a singlet scalar field breaks CP spon…
Reappraisal of the minimal flavoured scenario
Tirtha Sankar Ray, Avirup Shaw
Recent results from the intensity frontier indicate the tantalizing possibility of violation in lepton flavour universality. In light of this we revisit the minimal phenomenologica…
Solar constraints on captured electrophilic dark matter
Debajit Bose, Tarak Nath Maity, Tirtha Sankar Ray
Dark matter captured by interaction with electrons inside the Sun may annihilate via long-lived mediator to produce observable gamma ray signals. We utilize solar gamma ray flux me…
Broad toplike vector quarks at LHC and HL-LHC
Sayan Dasgupta, Rohan Pramanick, Tirtha Sankar Ray
Top like vector quarks arising from underlying strong sectors are expected to have large decay widths pushing them beyond the narrow width approximation. In this paper we consider…
Neutrinos from captured dark matter annihilation in a galactic population of neutron stars
Debajit Bose, Tarak Nath Maity, Tirtha Sankar Ray
Particulate dark matter captured by a population of neutron stars distributed around the galactic center while annihilating through long-lived mediators can give rise to an observa…
Probing composite Higgs boson substructure at the HL-LHC
Avik Banerjee, Sayan Dasgupta, Tirtha Sankar Ray
The Higgs boson may well be a composite scalar with a finite extension in space. Owing to the momentum dependence of its couplings the imprints of such a composite pseudo Goldstone…
Halo uncertainties in electron recoil events at direct detection experiments
Tarak Nath Maity, Tirtha Sankar Ray, Sambo Sarkar
The dark matter direct detection rates are highly correlated with the phase space distribution of dark matter particles in our galactic neighbourhood. In this paper, we make a syst…
Prospects of Migdal Effect in the Explanation of XENON1T Electron Recoil Excess
Ujjal Kumar Dey, Tarak Nath Maity, Tirtha Sankar Ray
The XENON1T experiment has recently announced the observation of an excess in electron recoil events at energy range of keV with a signal significance over the Standa…
Impact of a colored vector resonance on the collider constraints for top-like top partner
Sayan Dasgupta, Santosh Kumar Rai, Tirtha Sankar Ray
In this work we reappraise the collider constraints from leptonic final states on the vectorlike colored top partners taking into account the impact of exotic colored vector resona…
Exchange driven freeze out of dark matter
Tarak Nath Maity, Tirtha Sankar Ray
We introduce a novel mechanism where processes that preserve the number density of the dark sector set the relic density of a thermal particulate dark matter. In a relatively degen…
Resonant Assisted Annihilation
Tarak Nath Maity, Tirtha Sankar Ray
Assisted annihilation is a novel mechanism to generate viable sub-GeV thermal dark matter, where a pair of stable dark matter annihilates with an assister to Standard Model states.…
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…
Clockworked VEVs and Neutrino Mass
Avik Banerjee, Subhajit Ghosh, Tirtha Sankar Ray
In this paper we present an augmented version of the Abelian scalar clockwork model to generate geometrically suppressed vacuum expectation values (vev) of the pseudo Nambu-Goldsto…
Status of Flavour Maximal Non-minimal Universal Extra Dimension
Sayan Dasgupta, Ujjal Kumar Dey, Tapoja Jha +1
In this paper we consider an compactified flat extra dimensional scenario where all the standard model states can access the bulk and have generalised brane lo…
Constraining Composite Higgs Models using LHC data
Avik Banerjee, Gautam Bhattacharyya, Nilanjana Kumar +1
We systematically study the modifications in the couplings of the Higgs boson, when identified as a pseudo Nambu-Goldstone boson of a strong sector, in the light of LHC Run 1 and R…
Mitigating Direct Detection Bounds in Non-minimal Higgs Portal Scalar Dark Matter Models
Subhaditya Bhattacharya, Purusottam Ghosh, Tarak Nath Maity +1
Minimal scalar Higgs portal dark matter model is increasingly in tension with recent results form direct detection experiments like LUX and XENON. In this paper we make a systemati…
Dark Energy from pNGB Mediated Dirac Neutrino Condensate
Ujjal Kumar Dey, Tirtha Sankar Ray, Utpal Sarkar
We consider an extension of the Standard Model that provide an unified description of eV scale neutrino mass and dark energy. An explicit model is presented by augmenting the Stand…
Improving Fine-tuning in Composite Higgs Models
Avik Banerjee, Gautam Bhattacharyya, Tirtha Sankar Ray
In this paper we investigate the next-to-minimal composite Higgs model with a SO(6)/SO(5) coset, whose pNGB sector includes a Standard Model singlet in addition to the usual Higgs…