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Article
Open AccessSinglet-doublet fermion Dark Matter with Dirac neutrino mass, (g − 2)μ and ∆Neff
We study the possibility of generating light Dirac neutrino mass via scotogenic mechanism where singlet-doublet fermion Dark Matter (DM) plays non-trivial role in generating one-loop neutrino mass, anomalous m...
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Article
Open AccessDynamical inflation stimulated cogenesis
We propose a minimal setup that realises dynamical inflection point inflation, and, using the same field content, generates neutrino masses, a baryon asymmetry of the universe, and dark matter. A dark SU(2)D gaug...
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Article
Open AccessObservable \(\Delta {\textrm{N}}_{\textrm{eff}}\) in Dirac scotogenic model
We study the possibility of probing the radiative Dirac seesaw model with dark sector particles going inside the loop, popularly referred to as the Dirac scotogenic model via measurements of effective relativi...
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Article
Photocatalytic and Antibacterial Activity of Fluorescent CdS Quantum Dots Synthesized Using Aqueous Extract of Cyanobacterium Nostoc carneum
A low-cost, eco-friendly green strategy has been developed for the synthesis of fluorescent cadmium sulfide quantum dots (CdS QDs) using a cyanobacterium, Nostoc carneum. The as-synthesized CdS quantum dots were ...
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Article
Open AccessAffleck-Dine cogenesis of baryon and dark matter
We propose a mechanism for cogenesis of baryon and dark matter (DM) in the universe via the Affleck-Dine (AD) route. An AD field which breaks the lepton number symmetry, leads to the generation of lepton asymm...
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Article
Open AccessPBH-infused seesaw origin of matter and unique gravitational waves
The Standard Model, extended with three right-handed (RH) neutrinos, is the simplest model that can explain light neutrino masses, the baryon asymmetry of the Universe, and dark matter (DM). Models in which RH...
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Article
Open AccessLeptogenesis and dark matter through relativistic bubble walls with observable gravitational waves
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 result of a TeV scale supercoo...
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Article
Open AccessLow scale Dirac leptogenesis and dark matter with observable \(\Delta N_{\mathrm{eff}}\)
We propose a gauged \(B-L\) B - L ...
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Article
Open AccessEffects of gravitational lensing on neutrino oscillation in \( \gamma \) -spacetime
We study the effects of gravitational lensing on neutrino oscillations in the \(\gamma \) γ ...
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Chapter and Conference Paper
Low-Scale Leptogenesis From Three-Body Decay
We study the possibility of leptogenesis at tree level from a three-body decay along with dark matter and neutrino mass. We propose a first-of-its-kind model where we can have successful leptogenesis from the ...
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Chapter and Conference Paper
Dark Matter and Leptogenesis in Minimal \(U(1)_{B-L}\) Model with Nonminimal Quartic Inflation
We investigate the production mechanisms for dark matter and lepton asymmetry of the Universe after inflation in minimal \(U(1)_{B-L}\) ...
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Article
Open AccessCosmic inflation in minimal \(U(1)_{B-L}\) model: implications for (non) thermal dark matter and leptogenesis
We study the possibility of realising cosmic inflation, dark matter (DM), baryon asymmetry of the universe (BAU) and light neutrino masses in non-supersymmetric minimal gauged
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Chapter and Conference Paper
Common Framework for Inflation, Dark Matter, Baryogenesis and Neutrino Masses in the Scotogenic Model
We consider the scotogenic model involving an extra inert doublet and three SM-singlet fermions, all under an additional \(\mathbb {Z}_2\) Z 2 symmetry, to explain inflation, dark matter, baryogenesis ...
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Chapter and Conference Paper
Fermion Singlet Dark Matter in Scotogenic B-L Model
We study the possibility of right-handed Dark Matter (DM) in a gauged \(U(1)_{B-L} \times Z_{2}\) U ( 1 ) B - L × Z 2 extension of the Standard Model (SM) which is augmented by an additional sc...
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Article
Open AccessLow scale U(1)X gauge symmetry as an origin of dark matter, neutrino mass and flavour anomalies
We study a generic leptophilic U(1)X extension of the standard model with a light gauge boson. The U(1)X charge assignments for the leptons are guided by lepton universality violating (LUV) observables in semilep...
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Article
Open AccessConnecting light dirac neutrinos to a multi-component dark matter scenario in gauged \(B-L\) model
We propose a new gauged \(B-L\)B-L extension of the standard model where light neutrinos are of Dirac type, naturally acquiring sub-eV mass after electroweak symmetry breaking, without any additional global symme...
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Article
Open AccessTeV scale leptogenesis via dark sector scatterings
We propose a novel scenario of generating lepton asymmetry via annihilation and coannihilation of dark sector particles including t-channel processes. In order to realistically implement this idea, we consider...
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Chapter and Conference Paper
Type III Seesaw and Two-Component Dark Matter in \(U(1)_{B-L}\) Model
We have studied gauged \(\mathrm{U(1)_{B-L}}\) U ...
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Article
Open AccessType III seesaw for neutrino masses in U(1)B−L model with multi-component dark matter
We propose a B − L gauged extension of the Standard Model where light neutrino masses arise from type III seesaw mechanism. Unlike the minimal B − L model with three right handed neutrinos having unit lepton numb...
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Article
Open AccessFlavoured gauge extension of singlet-doublet fermionic dark matter: neutrino mass, high scale validity and collider signatures
We propose an Abelian gauged version of the singlet-doublet fermionic dark matter (DM) model where the DM, combination of a vector like fermion doublet and a fermion singlet, is naturally stabilised by the gau...
