A. Khodinov
A5107984378- 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
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Distributed and Parallel Computing Systems
- Radiation Detection and Scintillator Technologies
- advanced mathematical theories
- Particle Accelerators and Free-Electron Lasers
- Muon and positron interactions and applications
- Atomic and Molecular Physics
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced Data Storage Technologies
- Medical Imaging Techniques and Applications
- Particle accelerators and beam dynamics
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Digital Radiography and Breast Imaging
- Structural Analysis of Composite Materials
- Electron and X-Ray Spectroscopy Techniques
European Organization for Nuclear Research
2012-2024
National Research Tomsk State University
2017-2023
The University of Adelaide
2013-2021
Stony Brook University
2004-2020
University of New Mexico
2020
National Institute for Subatomic Physics
2019
University of Amsterdam
2019
University of British Columbia
2019
Moscow Engineering Physics Institute
2001-2016
Institute of Engineering Physics
1999-2015
We report results on the ratio of midrapidity antiproton-to-proton yields in Au+Au collisions at sqrt[s(NN)] = 130 GeV per nucleon pair as measured by STAR experiment RHIC. Within rapidity and transverse momentum range /y/<0.5 0.4<p(t)<1.0 GeV/c, is essentially independent either or rapidity, with an average 0.65+/-0.01((stat))+/-0.07((syst)) for minimum bias collisions. errors, no strong centrality dependence observed. The indicate that this RHIC energy, although p-p production becomes...
We report the first measurements of A_N absolute value and shape in -t range from 0.0015 to 0.010GeV/c^2 with a precision better than 0.005 for each data point using polarized atomic hydrogen gas jet target 100 GeV RHIC proton beam.
The effect of shadowing on the early state ultrarelativistic heavy ion collisions is investigated along with transverse energy and hard process production, specifically Drell-Yan, $J/\psi$, $\Upsilon$ production. We choose several parton distributions parameterizations nuclear shadowing, as well spatial dependence to study influence relevant observables. Results are presented for Au+Au at $\sqrt{s_{NN}} = 200$ GeV Pb+Pb 5.5$ TeV.
We explore how nuclear modifications to the free nucleon structure functions (also known as shadowing) affect heavy quark production in collisions at different impact parameters. assume that arise from a density dependent effect such gluon recombination and are thus proportional local density. calculate dependence of charm bottom on parameter show can lead significant reductions cross sections central relative peripheral interactions.
We report on the first measurement of single spin analyzing power (A_N) at sqrt(s)=200GeV, obtained by pp2pp experiment using polarized proton beams Relativistic Heavy Ion Collider (RHIC). Data points were measured in four momentum transfer t range 0.01 < |t| 0.03 (GeV/c)^2. Our result, averaged over whole t-interval is about one standard deviation above calculation, which uses interference between electromagnetic spin-flip amplitude and hadronic non-flip amplitude, source A_N. The...
Detectors based on the bulk-Micromegas technology exhibit position resolution better than 100 μm at counting rates of up to several tens kHz/cm2, along with trigger capabilities. These characteristics, combined detector's mechanical robustness and possibility for cost-effective industrial production, makes them a promising candidate ATLAS Muon Spectrometer upgrade in future luminosity enhancement LHC. The R&D project status will be presented together obtained results effort define baseline...
In heavy-ion collisions, $J/\ensuremath{\psi}$ and Drell-Yan production are expected to be affected by nuclear modifications the free nucleon structure functions. If these modifications, referred here as shadowing, proportional local density, per cross sections will depend on centrality. Differences in quark gluon shadowing lead a new source of impact parameter dependence ratio. We calculate this ratio CERN NA50 acceptance with several parametrizations explore its centrality dependence.
The Muon Spectrometer of the ATLAS detector at LHC is designed to provide high quality stand-alone muon identification, momentum measurement and trigger capabilities with pseudorapidity coverage. Precision tracking inner-most station in regions, 2.0 ≪ |η| 2:7, performed by 16 four-layered Cathode Strip Chambers on each end-cap. These are multi-wire proportional chambers segmented cathodes providing excellent spatial resolution counting rate capability. second cathode layer coarsely...
The effect of gluon shadowing on charm quark production in large impact parameter ultrarelativistic heavy ion collisions is investigated. Charm cross sections are calculated for a range noncentral parameters which can be determined from the global transverse energy distribution. We show that good probe local parton density determines effectiveness shadowing. discuss why may have spatial dependence and this detected collisions.
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> The Muon Spectrometer of the ATLAS detector at LHC is designed to provide high quality stand-alone muon identification, momentum measurement and trigger capabilities with pseudorapidity coverage. Precision tracking inner-most station in regions, <formula formulatype="inline"> <tex Notation="TeX">$2.0 ≪ \vert \eta 2.7$</tex></formula>, performed by 16 four-layered Cathode Strip Chambers on each...
A precise measurement of the analyzing power $A_N$ in proton-proton elastic scattering region 4-momentum transfer squared $0.001 < |t| 0.032 ({\rm GeV}/c)^2$ has been performed using a polarized atomic hydrogen gas jet target and 100 GeV/$c$ RHIC proton beam. The interference electromagnetic spin-flip amplitude with hadronic spin-nonflip is predicted to generate significant 4--5%, peaking at $-t \simeq 0.003 GeV}/c)^2$. This kinematic known as Coulomb Nuclear Interference region. possible...
The polarized hydrogen Jet target at RHIC continues its mission to provide absolute calibration for the proton beam polarimeters RHIC. Data were collected incoming momenta of 100, 24, and 32 GeV/c respectively. statistical systematic accuracy jet data 100 achieved goal measuring polarization 3% in Run 5. Attempts reducing uncertainty due molecular are also described.
The ATLAS muon spectrometer will employ cathode strip chambers (CSC) to measure high momentum muons in the extreme forward regions. Preamplification of charge on strips is performed amplifier shaper module I. Amplifier II performs analog buffering, digitization signals from individual and multiplexes data into two fibre optics links at 1 Gbps each. We present design architecture complete front end electronics chain its performance. also report production testing status overall detector electronics.