S.A. Kononov
A5107227039- Particle physics theoretical and experimental studies
- Radiation Detection and Scintillator Technologies
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Photocathodes and Microchannel Plates
- Nuclear Physics and Applications
- Methane Hydrates and Related Phenomena
- Radiation Therapy and Dosimetry
- Astrophysics and Cosmic Phenomena
- Superconducting Materials and Applications
- Muon and positron interactions and applications
- Spectroscopy and Laser Applications
- Aerogels and thermal insulation
- Global Political and Economic Relations
- Neutrino Physics Research
- Crystallography and Radiation Phenomena
- thermodynamics and calorimetric analyses
- Mass Spectrometry Techniques and Applications
- Advanced X-ray and CT Imaging
- Advanced X-ray Imaging Techniques
Novosibirsk State University
2014-2024
Budker Institute of Nuclear Physics
2014-2023
Siberian Branch of the Russian Academy of Sciences
2013-2023
Campbell Collaboration
2022
Boreskov Institute of Catalysis
2019
Kurchatov Institute
1997-2017
Institute for Theoretical and Experimental Physics
2014-2016
Russian Academy of Sciences
2013-2015
The $e^+e^-\to K^+K^-$ cross section is measured in the center-of-mass energy range $1.05-2.00$ GeV at SND detector. measurement based on data with an integrated luminosity of 35 pb$^{-1}$ collected VEPP-2000 $e^+e^-$-collider. obtained results are consistent previous most accurate BABAR experiment and have a comparable accuracy.
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.
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...
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.
This review discusses the application of aerogel Cherenkov detectors in colliding beam experiments. Such are used for charged particle identification at velocities which other methods ineffective. The paper examines production technology and how optical parameters measured. Data on threshold counters with direct light collection those using wavelength shifters evaluated. Also presented data Ring Image single multilayer focusing radiators.