A5005421866- Quantum Chromodynamics and Particle Interactions
- Nuclear physics research studies
- Particle physics theoretical and experimental studies
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Pulsed Power Technology Applications
- Nonlinear Photonic Systems
- Radiation Effects and Dosimetry
- Quantum, superfluid, helium dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- High-Energy Particle Collisions Research
- Gyrotron and Vacuum Electronics Research
- Atomic and Molecular Physics
- Advanced NMR Techniques and Applications
- Cold Fusion and Nuclear Reactions
- Advanced Chemical Physics Studies
- Crystallography and Radiation Phenomena
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- Nonlinear Waves and Solitons
- Quantum chaos and dynamical systems
- High-pressure geophysics and materials
- Pulsars and Gravitational Waves Research
- Photonic Crystal and Fiber Optics
- Advanced Mathematical Physics Problems
Institute of High Current Electronics
2022-2024
National Research Tomsk State University
2014-2023
Tomsk Polytechnic University
2014-2023
We report on the measurement of γp→J/ψp cross section from E_{γ}=11.8 GeV down to threshold at 8.2 using a tagged photon beam with GlueX experiment. find that total falls toward less steeply than expected two-gluon exchange models. The differential dσ/dt has an exponential slope 1.67±0.39 GeV^{-2} 10.7 average energy. LHCb pentaquark candidates P_{c}^{+} can be produced in s channel this reaction. see no evidence for them and set model-dependent upper limits their branching fractions...
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{}...
Radially excited $U(1)$ gauged $Q$-balls are studied using both analytical and numerical methods. Unlike the nongauged case, there exists only a finite number of radially at given values model's parameters. Similarly to unexcited $Q$-ball, one cannot possess Noether charge exceeding some limiting value. This decreases with an increase in radial excitation $Q$-ball. For $n$th excitation, is maximum allowable value gauge coupling constant, existence $Q$-ball becomes impossible if constant...
The paper discusses the results of measurement for three components tensor analyzing power reaction incoherent [Formula: see text]-meson photoproduction on a deuteron within proton energy range 15–200[Formula: text]MeV and neutron 15–150[Formula: text]MeV. experiment was performed deuterium internal gas target VEPP-3 electron accelerator using protons neutrons coincidence counting technique. measurements power’s are compared with statistical modeling frameworks theoretical model.
The (2+1)-dimensional Maxwell–Chern–Simons gauge model consisting of two complex scalar fields interacting through a common Abelian field is considered. It shown that the has solution describes soliton system vortex and Q-ball constituents. This two-dimensional possesses quantized magnetic flux electric charge. Moreover, nonzero angular momentum. Properties this vortex-Q-ball are investigated by analytical numerical methods. found combines properties Q-ball.
The preliminary results of measurement the tensor analyzing power component, T21 negative pion photoproduction on a polarized deuterons at photon energies 280 MeV – 900 MeV, and in emission angles 0° 180° are presented. experimental compared with theoretical predictions.
The (1+1)-dimensional gauge model of two complex self-interacting scalar fields that interact with each other through an Abelian field and a quartic interaction is considered. It shown the has nontopological soliton solutions describing systems consisting Q-ball components possessing opposite electric charges. interaction. interplay between attractive electromagnetic repulsive leads to existence symmetric nonsymmetric systems. Properties these are investigated by analytical numerical...
We describe a precise measurement of the ratio (e+ p) to (e− elastic scattering cross sections. This comparison is sensitive effect two-photon exchange contributions which may be cause for inconsistent extractions proton form factors obtained using different methods. The experiment was performed at storage ring VEPP–3, Novosibirsk energies positron/electron beams 1.0 and 1.6 GeV with electron/positron angles θ = 65÷105° first case 15÷25° 55÷75° second case. Details preliminary results are presented.
The paper contains new results for the ${T}_{20}$ component of tensor analyzing power measured incoherent photoproduction neutral pions on a deuteron, $\ensuremath{\gamma}d\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}pn$. are presented photon energies ${E}_{\ensuremath{\gamma}}$ in range from 300 to 600 MeV. experimental statistics accumulated at VEPP-3 accelerator complex 2013 was used. To identify events, proton and two $\ensuremath{\gamma}$'s...
The paper presents the results of measurements tensor analyzing power component [Formula: see text] for coherent neutral pion photoproduction on deuteron. were performed in Budker Institute Nuclear Physics using internal polarized deuterium target at VEPP-3 storage ring. covered region photon energy 240 — 420[Formula: text]MeV and center-of-mass polar angle 100–140[Formula: text]. compared with calculations within frameworks several theoretical models.
This paper presents new results for the [Formula: see text]-component of tensor analyzing power reaction text] in photon energy range text]. The experimental statistics accumulated 2013 at VEPP-3 accelerator-storage complex is used. events are identified by coincidence registration proton and two text]-quanta from decay neutral pion. To determine text]-component, asymmetry yields with respect to change sign polarization deuterium target measured. compared theoretical calculations which MAID...
New results for the T20-component of tensor-analyzing power incoherent negative pion photoproduction are presented. The experiment was performed electron beam energy 800 MeV at VEPP-3 storage ring in 2021. To extract T20-component, we used asymmetry with respect to change sign tensor polarization deuteron target. Identification reaction events carried out by detection two protons coincidence. Experimental data were compared statistical simulation, considering interaction between NN and πN...