Sudip Jana
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View article: Matter effects on flavor composition of astrophysical neutrinos
Matter effects on flavor composition of astrophysical neutrinos Open
We show that high-energy astrophysical neutrinos produced in the cores of heavily obscured active galactic nuclei (AGNs) can undergo strong matter effects, thus significantly influencing their source flavor ratios. In particular, matter ef…
View article: Gravitational Wave Signature and the Nature of Neutrino Masses: Majorana, Dirac, or Pseudo-Dirac?
Gravitational Wave Signature and the Nature of Neutrino Masses: Majorana, Dirac, or Pseudo-Dirac? Open
The fermionic nature of neutrinos and the origin of their tiny masses remain unresolved issues in particle physics, intrinsically connected to lepton number symmetry-conserved for Dirac, violated for Majorana, and effectively pseudo-Dirac …
View article: Tracing Neutrino Non-Standard Interactions through Charged Lepton Collisions
Tracing Neutrino Non-Standard Interactions through Charged Lepton Collisions Open
Neutrino non-standard interactions (NSI) play a crucial role in neutrino oscillations and can provide valuable insights for constructing models of neutrino masses and mixing. While NSI have been widely explored through oscillation and scat…
View article: Signatures of quasi-Dirac neutrinos in diffuse high-energy astrophysical neutrino data
Signatures of quasi-Dirac neutrinos in diffuse high-energy astrophysical neutrino data Open
Although the sources of astrophysical neutrinos are still unknown, they are believed to be produced by a population of sources in the distant universe. Measurements of the diffuse, all-sky astrophysical flux can thus be sensitive to flavor…
View article: Non-standard interactions of supernova neutrinos and mass ordering ambiguity at DUNE
Non-standard interactions of supernova neutrinos and mass ordering ambiguity at DUNE Open
We show that non-standard neutrino interactions (NSI) can notably modify the pattern of resonant flavor conversion of neutrinos within supernovae and significantly impact the neutronization burst signal in forthcoming experiments such as t…
View article: Neutrino masses and mixing from milli-charged dark matter
Neutrino masses and mixing from milli-charged dark matter Open
We propose a simple extension to the Standard Model, wherein neutrinos naturally attain small Majorana masses through a one-loop radiative mechanism featuring particles within the loops characterized by milli-charges. Unlike the convention…
View article: Radiative origin of fermion mass hierarchy in left-right symmetric theory
Radiative origin of fermion mass hierarchy in left-right symmetric theory Open
A bstract Despite the remarkable success of the Standard Model, the hierarchy and patterns of fermion masses and mixings remain a profound mystery. To address this, we propose a model employing the rank mechanism, where the originally mass…
View article: Restricting sterile neutrinos by neutrinoless double beta decay
Restricting sterile neutrinos by neutrinoless double beta decay Open
The bounds on parameters of the eV and higher scale Majorana sterile neutrinos from the 0νββ decay have been refined and updated. We present a simple and compact analytic expression for the bound in the Δm412−sin22θ14 plane, which includes…
View article: Flavor-specific dark matter signatures through the lens of neutrino oscillations
Flavor-specific dark matter signatures through the lens of neutrino oscillations Open
We investigate the flavor-specific properties of leptophilic dark matter in neutrino mass models, where dark matter signals are directly correlated with the neutrino oscillation data, providing complementary insights into the neutrino mass…
View article: Unified framework for <em>B</em>-anomalies, muon <em>g</em> – 2 and neutrino masses
Unified framework for <em>B</em>-anomalies, muon <em>g</em> – 2 and neutrino masses Open
We present a model of radiative neutrino masses which also resolves anomalies reported in B-meson decays, \\( {R}_{D^{\\left(\\ast \\right)}} \\) and \\( {R}_{K^{\\left(\\ast \\right)}} \\), as well as in…
View article: Muonic force and nonstandard neutrino interactions at muon colliders
Muonic force and nonstandard neutrino interactions at muon colliders Open
The discovery of neutrino oscillations implies that neutrinos are massive and mixed, necessitating an extension of the Standard Model, which may require the introduction of nonstandard neutrino interactions (NSIs). We investigate the poten…
View article: Neutrinoless double beta decay without vacuum Majorana neutrino mass
Neutrinoless double beta decay without vacuum Majorana neutrino mass Open
We present a proof-of-concept extension to the Standard Model that can generate a non-vanishing neutrinoless double beta decay (0νββ) signal without the existence of Majorana neutrinos or lepton number violation in the zero-density vacuum-…
View article: Radiative Origin of Fermion Mass Hierarchy in Left-Right Symmetric Theory
Radiative Origin of Fermion Mass Hierarchy in Left-Right Symmetric Theory Open
Despite the remarkable success of the Standard Model, the hierarchy and patterns of fermion masses and mixings remain a profound mystery. To address this, we propose a model employing the rank mechanism, where the originally massless quark…
View article: Flavor-Specific Dark Matter Signatures through the Lens of Neutrino Oscillations
Flavor-Specific Dark Matter Signatures through the Lens of Neutrino Oscillations Open
We investigate the flavor-specific properties of leptophilic dark matter in neutrino mass models, where dark matter signals are directly correlated with the neutrino oscillation data, providing complementary insights into the neutrino mass…
View article: Non-Standard Interactions of Supernova Neutrinos and Mass Ordering Ambiguity at DUNE
Non-Standard Interactions of Supernova Neutrinos and Mass Ordering Ambiguity at DUNE Open
We show that non-standard neutrino interactions (NSI) can notably modify the pattern of resonant flavor conversion of neutrinos within supernovae and significantly impact the neutronization burst signal in forthcoming experiments such as t…
View article: Neutrino masses and mixing from milli-charged dark matter
Neutrino masses and mixing from milli-charged dark matter Open
We propose a simple extension to the Standard Model, wherein neutrinos naturally attain small Majorana masses through a one-loop radiative mechanism featuring particles within the loops characterized by milli-charges. Unlike the convention…
View article: Long-lived doubly charged scalars in the left-right symmetric model: Catalyzed nuclear fusion and collider implications
Long-lived doubly charged scalars in the left-right symmetric model: Catalyzed nuclear fusion and collider implications Open
View article: Resonances of Supernova Neutrinos in Twisting Magnetic Fields
Resonances of Supernova Neutrinos in Twisting Magnetic Fields Open
We investigate the effect of resonant spin conversion of the neutrinos induced by the geometrical phase in a twisting magnetic field. We find that the geometrical phase originating from the rotation of the transverse magnetic field along t…
View article: Electromagnetic Properties of Neutrinos
Electromagnetic Properties of Neutrinos Open
Within the Standard Model, neutrinos exhibit no direct coupling to photons. Nonetheless, quantum loop corrections can give rise to electromagnetic properties in neutrinos, such as magnetic moments, electric dipole moments, electric charge,…
View article: Muon <em>g</em>-2 anomaly and neutrino magnetic moments
Muon <em>g</em>-2 anomaly and neutrino magnetic moments Open
We show that a unified framework based on an SU(2)H horizontal symmetry which generates a naturally large neutrino transition magnetic moment and explains the XENON1T electron recoil excess also predicts a positive shift in the …
View article: Neutrinoless Double Beta Decay without Vacuum Majorana Neutrino Mass
Neutrinoless Double Beta Decay without Vacuum Majorana Neutrino Mass Open
We present a proof-of-concept extension to the Standard Model that can generate a non-vanishing neutrinoless double beta decay ($0νββ$) signal without the existence of Majorana neutrinos or lepton number violation in the zero-density vacuu…
View article: Light neutrinophilic dark matter from a scotogenic model
Light neutrinophilic dark matter from a scotogenic model Open
We present a minimal sub-GeV thermal Dark Matter (DM) model where the DM primarily interacts with neutrinos and participates in neutrino mass generation through quantum loop corrections at one-loop level. We discuss the challenges in achie…
View article: Muonic Force and Neutrino Non-Standard Interactions at Muon Colliders
Muonic Force and Neutrino Non-Standard Interactions at Muon Colliders Open
The discovery of neutrino oscillations implies that neutrinos are massive and mixed, necessitating an extension of the Standard Model, which may require the introduction of non-standard neutrino interactions (NSI). We investigate the poten…
View article: Light Neutrinophilic Dark Matter from a Scotogenic Model
Light Neutrinophilic Dark Matter from a Scotogenic Model Open
We present a minimal sub-GeV thermal Dark Matter (DM) model where the DM primarily interacts with neutrinos and participates in neutrino mass generation through quantum loop corrections at one-loop level. We discuss the challenges in achie…
View article: Large neutrino magnetic moments in the light of recent experiments
Large neutrino magnetic moments in the light of recent experiments Open
The excess in electron recoil events reported recently by the XENON1T experiment may be interpreted as evidence for a sizable transition magnetic moment μvevμ of Majorana neutrinos. We show the consistency …
View article: Light thermal relics enabled by a second Higgs
Light thermal relics enabled by a second Higgs Open
Sub-GeV thermal relic dark matter typically requires the existence of a light mediator particle. We introduce the light two-Higgs-doublet portal, illustrated by a minimal UV-complete model for sub-GeV dark matter with kinematically forbidd…
View article: Search for leptophilic dark matter at the LHeC
Search for leptophilic dark matter at the LHeC Open
The Large Hadron electron Collider (LHeC) has been designed to push the field of deep inelastic scattering to the high energy and intensity frontier using an intense electron beam with a proton beam from the High Luminosity–Large Hadron Co…
View article: New Resonances of Supernova Neutrinos in Twisting Magnetic Fields
New Resonances of Supernova Neutrinos in Twisting Magnetic Fields Open
We investigate the effect of resonant spin conversion of the neutrinos induced by the geometrical phase in a twisting magnetic field. We find that the geometrical phase originating from the rotation of the transverse magnetic field along t…
View article: Probing heavy sterile neutrinos at neutrino telescopes via the dipole portal
Probing heavy sterile neutrinos at neutrino telescopes via the dipole portal Open
The question of how heavy a sterile neutrino can be probed in experiments leads us to investigate the Primakoff production of heavy sterile neutrinos from ultrahigh-energy neutrinos via the magnetic dipole portal. Despite the suppression f…
View article: Signal of neutrino magnetic moments from a galactic supernova burst at upcoming detectors
Signal of neutrino magnetic moments from a galactic supernova burst at upcoming detectors Open
The neutronization burst phase of a core-collapse supernova, which lasts for a few tens of milliseconds post-bounce, is dominated by electron neutrinos and can offer exceptional discovery potential for neutrino transition magnetic moments.…