V. Zhilich
A5083902118- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Nuclear Physics and Applications
- Particle accelerators and beam dynamics
- Atomic and Molecular Physics
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Advanced NMR Techniques and Applications
- Distributed and Parallel Computing Systems
- Radioactive Decay and Measurement Techniques
- Gamma-ray bursts and supernovae
- Muon and positron interactions and applications
- Crystallography and Radiation Phenomena
Budker Institute of Nuclear Physics
2014-2023
Novosibirsk State University
2014-2023
Siberian Branch of the Russian Academy of Sciences
2013-2023
University of Bonn
2013-2022
University of the Basque Country
2013-2022
Campbell Collaboration
2012-2022
Chonnam National University
2018-2022
Duke University
2022
Beihang University
2016-2018
Universitat de Barcelona
2018
The ratio of the elastic ${e}^{+}p$ to ${e}^{\ensuremath{-}}p$ scattering cross sections has been measured precisely, allowing determination two-photon exchange contribution these processes. This neglected is believed be cause discrepancy between Rosenbluth and polarization transfer methods measuring proton electromagnetic form factors. experiment was performed at VEPP-3 storage ring beam energies 1.6 1.0 GeV lepton angles 15\ifmmode^\circ\else\textdegree\fi{}...
The interference fragmentation function translates the of a quark with transverse projection spin into an azimuthal asymmetry two final-state hadrons. In e+e- annihilation product functions is measured. We report nonzero asymmetries for pairs charge-ordered pi+pi- pairs, which indicate significant in this channel. results are obtained from 672 fb-1 data sample that contains 711 \times 106 and was collected at near ?(4S) resonance, Belle detector KEKB asymmetric-energy collider.
The differential cross sections for the process $\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ have been measured in kinematic range $0.6\text{ }\text{ }\mathrm{GeV}<W<4.1\text{ }\mathrm{GeV}$, $|\mathrm{cos}{\ensuremath{\theta}}^{*}|<0.8$ energy and pion scattering angle, respectively, $\ensuremath{\gamma}\ensuremath{\gamma}$ center-of-mass system. results are based on a $223\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data...
Using the KEDR detector at VEPP-4M $e^+e^-$ collider, we have measured values of $R_{\text{uds}}$ and $R$ seven points center-of-mass energy between 3.12 3.72 GeV. The total achieved accuracy is about or better than $3.3\%$ most with a systematic uncertainty $2.1\%$. At moment it accurate measurement $R(s)$ in this range.
We report preliminary results on the analysis of three-body Y(10860)=> B barB pi, Y(10860) => (B barB* + c.c.) pi and B* decays including an observation Zb(10610)+- pi-+ [B barB*+c.c]+- Zb(10650)+- [B* barB*]+- as intermediate channels. measure branching fractions to be Br(Y(10860)=> barB*+c.c.]+- pi-+)=(28.3+-2.9+-4.6)x10^{-3} pi-+)=(14.1+-1.9+-2.4)x10^{-3} set 90% C.L. upper limit barB]+- pi-+)<4.0x10^{-3}. also amplitude Y(10860)=>Y(nS)pi+pi-, n=1,2,3 internal structure...
Facility of the extracted beams electrons and gammas based on e+e− VEPP-4M collider is described. This installation designed to test prototype detectors for HEP projects. Design parameters electron beam are following: intensity not less than 50 Hz, energy range from 0.1 GeV 3.0 resolution about 2–3%. The gamma 0.05 4.0 with an accuracy 0.5% energy. 1000 Hz.
We present the analysis of all KEDR data on determination J/ψ and ψ(2S) masses. The comprise six scans seven which were performed at VEPP-4M e+e− collider in 2002–2008. beam energy was determined using resonance depolarization method. detector accelerator conditions during very different that increases reliability averaged results. accounts for partial correlations systematic uncertainties following mass values obtained:MJ/ψ=3096.900±0.002±0.006 MeV,Mψ(2S)=3686.099±0.004±0.009 MeV. These...
Using the KEDR detector at VEPP-4M $e^+e^-$ collider, we have determined values of $R$ thirteen points center-of-mass energy between 1.84 and 3.05 GeV. The achieved accuracy is about or better than $3.9\%$ most with a systematic uncertainty less $2.4\%$.
We report the final results of a study ψ(3770) meson using data sample collected with KEDR detector at VEPP-4M electron–positron collider. The analysis takes into account interference between resonant and nonresonant DD¯ production, where latter is related to part energy-dependent form factor FD. vector dominance approach several empirical parameterizations have been tried for FDNR(s). Our mass total width areM=3779.2−1.7+1.8−0.7+0.5−0.3+0.3MeV,Γ=24.9−4.0+4.6−0.6+0.5−0.9+0.2MeV, first,...
A high-precision determination of the main parameters \psi(2S) resonance has been performed with KEDR detector at VEPP-4M e^{+}e^{-} collider in three scans -- \psi(3770) energy range. Fitting dependence multihadron cross section vicinity we obtained mass value M = 3686.114 +- 0.007 0.011 ^{+0.002}_{-0.012} MeV and product electron partial width by branching fraction into hadrons \Gamma_{ee}*B_{h} 2.233 0.015 0.037 0.020 keV. The third error quoted is an estimate model result due to...
Status of several projects under development in Budker INP with GEM-based detectors for synchrotron radiation imaging and particle tracking is reviewed. These are namely: the detector explosions(DIMEX) at SR beam, WAXS studies beam (OD4), triple-GEM tagging system KEDR experiment VEPP-4M collider Deuteron VEPP-3 storage ring.
The present work continues a series of the KEDR measurements $R$ value that started in 2010 at VEPP-4M $e^+e^-$ collider. By combining new data with our previous results this energy range we measured values $R_{\text{uds}}$ and nine center-of-mass energies between 3.08 3.72 GeV. total accuracy is about or better than $2.6\%$ most points systematic uncertainty $1.9\%$. Together precise measurement 1.84-3.05 GeV, it constitutes detailed high-precision near charmonium production threshold.
Using the inclusive photon spectrum based on a data sample collected at $J/\psi$ peak with KEDR detector VEPP-4M $e^+e^-$ collider, we measured rate of radiative decay $J/\psi\to\gamma\eta_{\rm c}$ as well $\eta_{\rm mass and width. Taking into account an asymmetric lineshape obtained $\Gamma^0_{\gamma\eta_{\rm c}}=2.98\pm0.18 \phantom{|}^{+0.15}_{-0.33}$ keV, $M_{\eta_{\rm c}} = 2983.5 \pm 1.4 \phantom{|}^{+1.6}_{-3.6}$ MeV/$c^2$, $\Gamma_{\eta_{\rm 27.2 3.1 \phantom{|}^{+5.4}_{-2.6}$ MeV.
A method of measurement the energy electrons extracted from VEPP-4M accelerator is described. The was verified experimentally. results obtained are in good agreement with simulation. resolution 1.8% for electron 1000 MeV and improves to 0.7% 3500 MeV.