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Information × Registration Number 0226U000083, (0121U108812) , R & D reports Title Studies on the properties of fundamental interactions in nuclear reactions, structure of exotic nuclei, high-energy physics, particle astrophysics, and cosmology popup.stage_title Магнітогідродинамічне моделювання взаємодії магнітара з викидом наднової. Контроль квантово-механічних процесів на основі точно розв’язуваних моделей з багатоямними потенціалами. Head Korchyn Oleksandr Yu., д.ф.-м.н. Registration Date 02-01-2026 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description1 Analysis of polarization effects in the reaction of electron-positron annihilation into a pair of top quarks (t-quarks) with the decay of the latter into bottom quarks (b-quarks), leptons and neutrinos, in order to study the coupling constants of t-quarks with photons and Z- bosons. Investigation and calculations of observables in semi-leptonic decays of B_c mesons to different states of charmonium. Model-independent analysis of the reaction of scalar- or vector-meson production (with the formation of nucleon-antinucleon pair) in electron-positron collisions. The amplitude of these reactions takes into account contribution of a number of known nucleon resonances with spins 1/2 and 3/2. Calculation of expressions for different observables (including polarization) in terms of transition electromagnetic form factors of the nucleon. A separate consideration of the case in which the amplitude does not include resonances (the Born approximation). An important goal of our research is building a new family of current operators due to exchange of clothed mesons between clothed nucleons. Our search in this direction is based on the clothing procedure, which was put forward a few years ago in relativistic quantum field theory (more precisely for its instantaneous form) by Greenberg and Schweber, and developed by collaboration between LTP (Dubna), INFN (University of Padowa, Italy) and ITP KIPT (Kharkov). Further development and refinement of the Dirac multiple eikonal scattering model for description of the p-A collisions at intermediate energies, based on realistic pN-amplitudes, and calculations of the nuclei structure in the relativistic mean-field approximation, analysis of the corresponding cross sections and spin observables, and investigation of the role of corrections in this model. popup.description2 The object of research is the scattering of protons and light ions on nuclei, polarization phenomena, meson and baryon resonances, decays of Bc-mesons, formation of top quarks, electron-positron annihilation, structure of neutron-excess nuclei, astrophysics, magnetars and supernovae, cosmology and applied cosmography. The purpose of the work is to develop theoretical approaches to describe nuclear reactions at intermediate energies, search for effects of new physics in the birth and decay of top quarks, calculations of polarization observables in the formation of meson and baryon resonances, calculations of the properties of nucleon-stable nuclei, calculation of parameters of cosmological models, modeling of processes in magnetars and supernovae. Research methods – methods of theoretical nuclear physics and elementary particle physics, quantum electrodynamics, Standard Model of elementary particle physics, cosmological equations, general relativity, computer calculations. Results and novelty – the obtained research results are new, they correspond to the world level of research in the relevant scientific areas of nuclear physics, high-energy and elementary particle physics, quantum field theory, astrophysics and cosmology. Keywords: Standard Model, polarization observables, multiple scattering theory, meson and baryon resonances, top quark, SR symmetry, cosmographic parameters, gravitational-gauge duality, tunneling in nanosystems. Product Description popup.authors Victor P. Berezovoj Olga M. Shekhovtsova Levon H. Zazunov Andrej V. Zhiglo Yu. L. Bolotin Vitaliy A. Cherkaskiy Olexandr V. Shebeko Sergey V. Trubnikov Nikolaj P. Merenkov Mykhailo I. Konchatnyi Mikhail G. Shatnev Alex S. Fomin Taras V. Zagoskin Victor I. Kuprikov Vyacheslav M. Tarasov Oleksii Y. Nurmagambetov Ivan V. Truten Yan O. Kostylenko Roman T. Ovsiannikov Adam M. Arslanaliev Vsevolod S. Skorobogatov popup.nrat_date 2026-01-02 Close