R. Chudasama
A5074628777- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Gamma-ray bursts and supernovae
- Nuclear reactor physics and engineering
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- International Science and Diplomacy
- Nuclear physics research studies
- Radiation Therapy and Dosimetry
- advanced mathematical theories
- Gas Dynamics and Kinetic Theory
- X-ray Diffraction in Crystallography
- Stochastic processes and financial applications
- Crystallization and Solubility Studies
University of Alabama
2023-2025
Tata Institute of Fundamental Research
2020-2025
University of Antwerp
2024
Institute of High Energy Physics
2016-2024
A. Alikhanyan National Laboratory
2022-2024
Eötvös Loránd University
2019-2023
Center for Migration Studies of New York
2016-2023
Bhabha Atomic Research Centre
2014-2022
Atlantic General Hospital
2022
Saha Institute of Nuclear Physics
2021
The Pixel Luminosity Telescope is a silicon pixel detector dedicated to luminosity measurement at the CMS experiment LHC. It located approximately 1.75 m from interaction point and arranged into 16 "telescopes", with eight telescopes installed around beam pipe either end of each telescope composed three individual sensor planes. per-bunch instantaneous measured by counting events where all planes in register hit, using special readout full LHC bunch-crossing rate 40 MHz. information read out...
A new muon reconstruction algorithm is introduced at the CMS experiment. This reconstructs muons using only central tracker and Resistive Plate Chamber (RPC). The aim of this work to study how a reconstructed with RPC information would perform compared standard detector. efficiencies reconstruct identify transverse momentum greater than 20 GeV/c are measured. probabilities misidentify hadrons as low also reported. These identification used CMS.
The Resistive Plate Chambers (RPCs) are employed in the CMS Experiment at LHC as dedicated trigger system both barrel and endcap. This article presents results of radiation background measurements performed with 2011 2012 proton-proton collision data collected by CMS. Emphasis is given to distribution inside RPCs. expected rates during future running estimated from extrapolated simulation.
During 2013 and 2014 (Long Shutdown LS1) the CMS experiment is upgrading forward region installing a fourth layer of RPC detectors in order to complete improve muon system performances view foreseen high luminosity run LHC. The new two endcap disks consists 144 double-gap chambers assembled at three different production sites: CERN, Ghent (Belgium) BARC (India). chamber components as well final are subjected full series tests established parallel all sites.
This note represents an attempt to gather the input related light-by-light scattering ($\gamma\gamma$) cross-section measurements at LHC with aim of checking consistency different standard model predictions. For first time, we also consider contribution from $\eta_b(1S)$ meson production diphoton invariant mass distribution, by calculating its inclusive photoproduction cross-section. Using a simplified set assumptions, find result $115\pm 19\,\,\text{nb}$, consistent predictions within two...
This document collects the proceedings of PHOTON 2017 conference ("International Conference on Structure and Interactions Photon", including 22th "International Workshop Photon-Photon Collisions", High Energy Photon Colliders") held at CERN (Geneva) in May 2017. The latest experimental theoretical developments topics series are covered: (i) $γ\,γ$ processes e$^+$e$^-$, proton-proton (pp) nucleus-nucleus (AA) collisions current future colliders, (ii) $γ$-hadron interactions e$^\pm$p, pp, AA...
Results of exclusive photoproduction Upsilon states in Ultraperipheral collisions (UPC) protons and ions with the CMS experiment are presented, which provides a clean probe gluon distribution at small values parton fractional momenta $x \approx 10^{-2} 10^{4}$ central rapidities (|y| $< 2.5$). The three (1S, 2S, 3S) measured dimuon decay channel along photon-photon decaying to QED continuum $\sqrt{s_{NN}}=5.02$~TeV for integrated luminosity $L_{int} = 35$ nb$^{-1}$. total cross sections...
Deep learning techniques have been proven to provide excellent performance for a variety of high-energy physics applications, such as particle identification, event reconstruction and trigger operations. Recently, we developed an end-to-end deep approach identify various particles using low-level detector information from collisions. These models will be incorporated in the CMS software framework (CMSSW) enable their use or operation real time. Incorporating these computational tools...
Abstract A novel method to reconstruct the energy of hadronic showers in CMS High Granularity Calorimeter (HGCAL) is presented. The HGCAL a sampling calorimeter with very fine transverse and longitudinal granularity. active media are silicon sensors scintillator tiles readout by SiPMs absorbers combination lead Cu/CuW electromagnetic section, steel section. shower reconstruction based on graph neural networks it makes use dynamic reduction network architecture. It shown that algorithm able...
The muon spectrometer of the CMS (Compact Muon Solenoid) experiment at Large Hadron Collider (LHC) is equipped with a redundant system made Resistive Plate Chambers (RPCs) and Drift Tube (DT) chambers in barrel, RPC Cathode Strip (CSCs) endcap region. In this paper, operations performance during first three years LHC activity are presented. stability performance, terms efficiency, cluster size noise, also reported. Finally, radiation background levels on have been measured as function...
Relativistic heavy ions are a copious source of virtual photons, which allow to study the gammaproton interactions in ultraperipheral collisions (UPC).The exclusive photoproduction vector mesons provide clean probe gluon distribution at very small values parton fractional momenta x ≈ 10 -2 -10 -4 central rapidities (|y| < 2.2) and search for saturation phenomena.The first measurement ϒ (1S, 2S, 3S) states their dimuon decay channel protons (pPb) with CMS experiment √ s NN = 5.02 TeV an...
February 1 th 2013 marked the end of first period running Large Hadron Collider (LHC) and start a two-year break from operation (LS1) aimed at consolidating both accelerator as well detectors. By LS1, LHC is expected to provide collisions 13 Tev. While, by 2020, ultimate instantaneous luminosity be 1034/cm2/s. To prepare for this scenario, Resistive Plate Chamber system CMS experiment planning several detector maintainance consolidation interventions. These include High Voltage Low...
The RPC muon detector of the CMS experiment at LHC (CERN, Geneva, Switzerland) is equipped with a Gas Gain Monitoring (GGM) system. A report on stability system during 2011-2012 data taking run given, as well observation an effect which suggests novel method for monitoring gas mixture composition.
The exclusive $\Upsilon$ photoproduction in ultraperipheral proton-nucleus and nucleus-nucleus collisions at LHC energies is being investigated using pQCD framework which constrain the gluon distribution proton nuclei low $x$. Rapidity distributions of with different parameterization shadowing for nuclear PDFs including photon flux suppression strong interaction, are presented energies. Predictions done $\sqrt s$=$8.16$ TeV pPb, s$=$5.02$ PbPb Run 2 Heavy Ion collision scenario measurements...
Evidence for the light-by-light scattering process, γγ → γγ, in ultraperipheral PbPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is reported. The analysis conducted using data sample corresponding to an integrated luminosity 390 μb −1 recorded by CMS experiment LHC. Light-by-light processes are selected events with two photons exclusively produced, each transverse ET > 2 GeV, pseudorapidity |η | < 2.4, diphoton invariant mass mγγ 5 momentum pγγ_T 1 and acoplanarity...
This note represents an attempt to gather the input related light-by-light scattering ($\gamma\gamma$) cross-section measurements at LHC with aim of checking consistency different standard model predictions. For first time, we also consider contribution from $\eta_b(1S)$ meson production diphoton invariant mass distribution, by calculating its inclusive photoproduction cross-section. Using a simplified set assumptions, find result $115\pm 19\,\,\text{nb}$, consistent predictions within two...
The Resistive Plate Chambers (RPC) are used in the CMS experiment at trigger level and also standard offline muon reconstruction. In order to guarantee quality of data collected monitor online detector performance, a set tools has been developed which is heavily RPC system. Web-based monitoring (WBM) java servlets that allows users check performance hardware during taking, providing distributions history plots all parameters. functionalities WBM presented along with studies as function...
Exclusive W+ Wpair production in photon-photon collisions during the pp runs at 7 and 8TeV are observed used to put constraints on Anomalous Quartic Gauge Couplings. During proton lead photon-induced vector meson is via decay of Ypsilon into two muons. The slope squared pT distribution measured determine size region. Presented DIS 2016 XXIV International Workshop Deep-Inelastic Scattering Related Subjects CMS experiment Ruchi Chudasama (for Collaboration)∗ Nuclear Physics Division Bhabha...