Bhaskar Dutta
A5087451518- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Quantum Chromodynamics and Particle Interactions
- Astrophysics and Cosmic Phenomena
- Computational Physics and Python Applications
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Galaxies: Formation, Evolution, Phenomena
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
- Relativity and Gravitational Theory
- Particle accelerators and beam dynamics
- Radio Astronomy Observations and Technology
- Cold Atom Physics and Bose-Einstein Condensates
- Nuclear Physics and Applications
- Quantum, superfluid, helium dynamics
- Quantum Mechanics and Applications
- Pulsars and Gravitational Waves Research
- Advanced Mathematical Theories and Applications
- CCD and CMOS Imaging Sensors
Texas A&M University
2016-2025
Mitchell Institute
2016-2025
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2025
AstraZeneca (United States)
2022-2024
Sorbonne Université
2024
Laboratoire de physique des lasers
2023-2024
Université Sorbonne Paris Nord
2024
Federico Santa María Technical University
2023
University of Washington
2022
The University of Texas at Arlington
2022
This paper is a review of the present status neutrino mass physics, which grew out an APS sponsored study neutrinos in 2004. After discussion knowledge masses and mixing some popular ways to probe new physics implied by recent data, it summarizes what can be learned about interactions as well nature beyond Standard Model from various proposed experiments. The intriguing possibility that may at heart our understanding long standing puzzle cosmology, i.e. origin matter–antimatter asymmetry...
Abstract High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along beam collision axis, outside acceptance existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located several hundred meters from ATLAS interaction point and shielded by concrete rock, will host suite experiments probe standard model (SM) processes search for physics beyond (BSM). In this report, we review status civil engineering plans explore...
Many low-threshold experiments observe sharply rising event rates of yet unknown origins below a few hundred eV, and larger than expected from known backgrounds. Due to the significant impact this excess on dark matter or neutrino sensitivity these experiments, collective effort has been started share knowledge about individual observations. For this, EXCESS Workshop was initiated. In its first iteration in June 2021, ten rare search collaborations contributed initiative via talks...
Recently the Experiment to Detect Global Epoch of Reionization Signature reported detection a 21 cm absorption signal stronger than astrophysical expectations. In this paper we study impact radiation from dark matter (DM) decay and primordial black holes (PBHs) on temperature in reionization epoch, impose constraint decaying PBH energy injection intergalactic medium, which can heat up neutral hydrogen gas weaken signal. We assume strong coupling limit Lyman-$\ensuremath{\alpha}$ background...
In a recent paper, minimal supersymmetric (SUSY) SO(10)xS_4 based unified model of flavor for quarks and leptons was proposed with two 10 one 126 contributing to fermion masses. An important aspect this is that Yukawa couplings emerge dynamically from minimization the flavon potential, thereby reducing number parameters considerably. We make detailed numerical analysis mixings including SUSY threshold effects at TeV scale type-I corrections type-II dominant seesaw neutrino This single-step...
We investigate constraints on the abundance of primordial black holes (PBHs) in mass range ${10}^{15}--{10}^{17}\text{ }\text{ }\mathrm{g}$ using data from cosmic microwave background (CMB) and MeV extragalactic gamma-ray (EGB). Hawking radiation PBHs with lifetime greater than age Universe leaves an imprint CMB through modification ionization history damping anisotropies. Using a model for redshift-dependent energy injection efficiencies, we show that combination temperature polarization...
We consider the diphoton resonance at 13 TeV LHC in a consistent model with new scalars and vector-like fermions added to Standard Model (SM), which can be constructed from orbifold grand unified theories string models. The gauge coupling unification achieved, neutrino masses generated radiatively, electroweak vacuum stability problem solved. To explain resonance, we study spin-0 particle, discuss various associated final states.
We examine the current constraints and future sensitivity of coherent elastic neutrino-nucleus scattering ($\mathrm{CE}\ensuremath{\nu}\mathrm{NS}$) experiments to mixing scenarios involving a ${Z}^{\ensuremath{'}}$ which interacts via portals with standard model. contrast results against those from fixed target, atomic parity violation, solar neutrino experiments. demonstrate significant dependence experimental reach on coupling nonuniversality complementarity...
This report summarizes the present status of neutrino non-standard interactions (NSI). After a brief overview, several aspects NSIs are discussed, including connection to mass models, model-building and phenomenology large NSI with both light heavy mediators, in short- long-baseline oscillation experiments, cross-sections, complementarity other low- high-energy fits scattering data, DUNE sensitivity NSI, effective field theory as well relevance dark matter cosmology. We also discuss open...
We study direct detection bounds on cosmic ray-upscattered dark matter in simplified models including light mediators. find that the energy dependence scattering cross section is significant, and produces stronger than previously found (which assumed constant sections) by many orders of magnitude at low DM mass. Finally, we compute "neutrino-floor" will limit future searches for matter. While focus vector interactions illustration, emphasize critical determining accurate any particle physics...
We consider a simple extension of the Standard Model (SM) by complex scalar doublet and singlet along with three sterile neutrinos. The neutrinos mix SM to produce light neutrino states consistent oscillation data heavy states. lightest has lifetime longer than age Universe can provide correct dark matter relic abundance. Utilizing tree-level flavor changing interactions mass $\ensuremath{\sim}\mathcal{O}(100)\text{ }\text{ }\mathrm{MeV}$ neutrinos, we explain anomalous magnetic moments both...
This paper describes the operation of Coherent CAPTAIN-Mills (CCM) detector located at Los Alamos Neutron Science Center National Laboratory. CCM is a 10-ton liquid argon 20 meters from high flux neutron/neutrino source and designed to search for sterile neutrinos (${\ensuremath{\nu}}_{s}$'s) light dark matter (LDM). An engineering run was performed in fall 2019 study characteristics CCM120 by searching coherent scattering signals consistent with ${\ensuremath{\nu}}_{s}$'s LDM resulting...
Vector boson fusion (VBF) processes at the Large Hadron Collider (LHC) provide a unique opportunity to search for new physics with electroweak couplings. A feasibility study of supersymmetric dark matter in final state two VBF jets and large missing transverse energy is presented 14 TeV. Prospects determining relic density are studied cases Wino Bino-Higgsino matter. The LHC could probe mass up approximately 600 GeV luminosity 1000 fb$^{-1}$.
The muon g−2 anomaly is a long-standing discrepancy from its standard model prediction. recent improved measurement of the fine structure constant makes electron very interesting for both sign and magnitude in comparison to anomaly. In order explain anomalies, we introduce flavor violation minimal supersymmetric (MSSM) as low energy theory. lepton violating process τ→eγ one major constraints anomalies simultaneously emerging terms. We show various mass spectra sleptons, neutralinos,...
We discuss prospects for probing $Z$-prime and nonstandard neutrino interactions using neutrino-nucleus coherent scattering with ultralow energy ($\ensuremath{\sim}10\text{ }\text{ }\mathrm{eV}$) threshold Si Ge detectors. The analysis is performed in the context of a specific contemporary reactor-based experimental proposal, developed cooperation Nuclear Science Center at Texas A University, referencing available technology based upon economical scalable detector arrays. For expected...
We show that the excess in electron recoil events seen by XENON1T experiment can be explained a relatively low-mass luminous dark matter candidate. The scatters inelastically detector (or surrounding rock) to produce heavier state with ∼2-3 keV mass splitting. This then decays within detector, producing peak spectrum is good fit observed excess. comment on ability of future direct detection experiments differentiate this model from other "beyond standard model" scenarios and possible tritium...
We search for beyond the standard model physics by combining COHERENT Collaboration energy and timing data. Focusing on light, ≲GeV mediators, we find data favor a ∼10-1000 MeV mediator, as compared to best fit at ≲2σ level. The best-fit coupling range is g∼10^{-5}-10^{-3}. provide statistical information neutrino flavor distributions that not attainable from nuclear recoil energies alone. This result accounts uncertainty in effective size of neutron distribution, highlights power including...
Searches for pseudoscalar axionlike-particles (ALPs) typically rely on their decay in beam dumps or conversion into photons haloscopes and helioscopes. We point out a new experimental direction ALP probes via production by the intense gamma ray flux available from megawatt-scale nuclear reactors at neutrino experiments through Primakoff-like Compton-like channels. Low-threshold detectors close proximity to core will have visibility decays inverse Primakoff Compton scattering, providing...
We propose a novel strategy to search for new physics in timing spectra at low-energy neutrino experiments using pulsed beam, envisioning the situation which particle comes from decay of its heavier partner with finite width. The distribution events induced by dark matter (DM) candidate scattering detector may populate relatively narrow range, forming "resonancelike" shape. Because this structural feature, signal be isolated backgrounds, particular when backgrounds are uniformly distributed...