S. Ganguly
A5033984978- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Distributed and Parallel Computing Systems
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Big Data Technologies and Applications
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Structural Analysis of Composite Materials
- Superconducting Materials and Applications
- Digital Radiography and Breast Imaging
- Nuclear reactor physics and engineering
- Machine Learning in Materials Science
- Black Holes and Theoretical Physics
- Atomic and Molecular Physics
- Advanced Data Storage Technologies
- Anomaly Detection Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
The University of Tokyo
2022-2025
University of Manchester
2023-2024
Weizmann Institute of Science
2018-2024
Institute for High Energy Physics
2023-2024
Institute of Science and Technology
2023-2024
Atlas Scientific (United States)
2024
Indian Institute of Technology Kanpur
2024
A. Alikhanyan National Laboratory
2024
University of Geneva
2023-2024
The University of Adelaide
2018-2023
We report the results of a study exclusive semileptonic decays B->pi0lnu, B->pi+lnu, B->rho0lnu, B->rho+lnu and B->omegalnu, where l represents an electron or muon. The events are tagged by fully reconstructing second B meson in event hadronic decay mode. measured branching fractions Br(B->pi0lnu) = (0.80 +- 0.08 0.04)x10^-4, Br(B->pi+lnu) (1.49 0.09 0.07)x10^-4, Br(B->rho0lnu) (1.83 0.10 0.10)x10^-4, Br(B->rho+lnu) (3.22 0.27 0.24)x10^-4, Br(B->omegalnu) =(1.07 0.16 first error is...
Abstract In High Energy Physics experiments Particle Flow (PFlow) algorithms are designed to provide an optimal reconstruction of the nature and kinematic properties particles produced within detector acceptance during collisions. At heart PFlow is ability distinguish calorimeter energy deposits neutral from those charged particles, using complementary measurements particle tracking devices, a superior measurement content kinematics. this paper, computer vision approach fundamental aspect...
Abstract The task of reconstructing particles from low-level detector response data to predict the set final state in collision events represents a set-to-set prediction requiring use multiple features and their correlations input data. We deploy three separate neural network architectures reconstruct containing single jet fully-simulated calorimeter. Performance is evaluated terms particle reconstruction quality, properties regression, jet-level metrics. results demonstrate that such...
We report the first measurement of $τ$ lepton polarization in decay ${\bar B} \rightarrow D^* τ^- {\barν_τ}$ as well a new ratio branching fractions $R(D^{*}) = \mathcal{B}({\bar {\barν_τ}) / \ell^- {\barν_{\ell}})$, where $\ell^-$ denotes an electron or muon, with decays $τ^- π^- ν_τ$ and ρ^- ν_τ$. use full data sample $772 \times 10^6$ $B{\bar B}$ pairs accumulated Belle detector at KEKB electron-positron collider. Our preliminary results, $R(D^*) 0.276 \pm 0.034{\rm (stat.)} ^{+0.029}...
A bstract We search for CP violation in the decay ${D^{+}}\to K_S^0{K^{+}}$ using a data sample with an integrated luminosity of 977 fb −1 collected Belle detector at KEKB e + − asymmetric-energy collider. No has been observed and asymmetry is measured to be (−0.25 ± 0.28 0.14)%, which most sensitive measurement date. After subtracting due ${K^0}-{{\overline{K}}^0}$ mixing, {{\overline{K}}^0}{K^{+}}$ found (+0.08 0.14)%.
Physical theories grounded in mathematical symmetries are an essential component of our understanding a wide range properties the universe. Similarly, domain machine learning, awareness such as rotation or permutation invariance has driven impressive performance breakthroughs computer vision, natural language processing, and other important applications. In this report, we argue that both physics community broader learning have much to understand potentially gain from deeper investment...
After the next planned upgrades to LHC, luminosity it delivers will more than double, substantially increasing already large demand on computing resources. Therefore an efficient way reconstruct physical objects is required. Recent studies show that one of quantum techniques, annealing (QA), can be used perform particle tracking with efficiency higher 90% in high pileup region environment. The algorithm starts by determining connection between hits, and classifies topological their pattern....
Abstract A configurable calorimeter simulation for AI (CoCoA) applications is presented, based on the Geant4 toolkit and interfaced with Pythia event generator. This open-source project aimed to support development of machine learning algorithms in high energy physics that rely realistic particle shower descriptions, such as reconstruction, fast simulation, low-level analysis. Specifications granularity material its nearly hermetic geometry are user-configurable. The tool supplemented simple...
Abstract The simulation of particle physics data is a fundamental but computationally intensive ingredient for analysis at the large Hadron collider, where observational set-valued generated conditional on set incoming particles. To accelerate this task, we present novel generative model based graph neural network and slot-attention components, which exceeds performance pre-existing baselines.
The simulation of particle physics data is a fundamental but computationally intensive ingredient for analysis at the Large Hadron Collider, where observational set-valued generated conditional on set incoming particles. To accelerate this task, we present novel generative model based graph neural network and slot-attention components, which exceeds performance pre-existing baselines.
Abstract Jet classification is an important ingredient in measurements and searches for new physics at particle colliders, secondary vertex reconstruction a key intermediate step building powerful jet classifiers. We use neural network to perform finding inside jets order improve the performance, with focus on separation of bottom vs. charm flavor tagging. implement novel, universal set-to-graph model, which takes into account information from all tracks determine if pairs originated common...
Triple heavy vector boson production, $p p \to VVV$ $(V = W, Z)$, has recently been observed for the first time. We propose that precision measurements of this process provide an excellent probe generation light quark Yukawa couplings. Modified interactions with off-shell Higgs in lead to a rapid growth partonic cross sections energy, which manifests enhanced $p_T$ distribution final state leptons and quarks. quantify effect estimate present future 2$\sigma$ sensitivity up, down, strange...
We here report on the progress of HHH Workshop, that took place in Dubrovnik July 2023. After discovery a particle complies with properties Higgs boson Standard Model, all SM parameters are principle determined. However, order to verify or falsify model, full form potential has be This includes measurement triple and quartic scalar couplings. ongoing measurements for multi final states, an emphasis three SM-like bosons at 125 GeV, but also mentioning other options. discuss both experimental...
We report a search for $B^{0}\to ηη$ with data sample corresponding to an integrated luminosity of $698 \,{\rm fb}^{-1}$ containing $753 \times 10^{6}$ $B\bar{B}$ pairs collected at the $Υ(4S)$ resonance Belle detector KEKB asymmetric-energy $e^{+}e^{-}$ collider. The branching fraction is measured be $\mathcal{B}(B^{0} \to ηη) = (7.6^{+2.7 +1.4}_{-2.3 -1.6}) 10^{-7}$ level 3.3 standard deviations above zero, which provides first evidence decay $B^{0} ηη$.
We have extended an earlier study of the effect a laser field on ${\mathrm{He}}^{+}$-He charge-transfer collisions to consider finite bandwidth and include full multiple-photon exchange with field. The first is shown be negligible so long as collision time lies within \ensuremath{\sim}\ensuremath{\Elzxh}/(bandwidth). As regards second aspect, we show that in this nonperturbative treatment it can only studied by discarding rotating-wave approximation. Charge-transfer cross section after...
Jet production cross-section measurements are presented.The done with the data from Large Hadron Collider (LHC) proton-proton collisions, collected Compact Muon Solenoid (CMS) detector.The inclusive jet carried out at √ s = 7 TeV and 8 total integrated luminosity (L int ) 5.0 fb -1 10.71 respectively.The dijet dataset.Jets reconstructed anti-k T clustering algorithm size parameter R 0.7.The measured cross sections corrected for detector effects compared to perturbative QCD predictions NLO,...