A5003575691- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Advanced Photocatalysis Techniques
- International Science and Diplomacy
- TiO2 Photocatalysis and Solar Cells
- Atomic and Subatomic Physics Research
- Covalent Organic Framework Applications
- Neutrino Physics Research
- Electronic and Structural Properties of Oxides
- Advanced NMR Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Photovoltaic System Optimization Techniques
- Silicon and Solar Cell Technologies
- Particle Accelerators and Free-Electron Lasers
- Computational Physics and Python Applications
- Nuclear physics research studies
- Perovskite Materials and Applications
- Cosmology and Gravitation Theories
- Graphite, nuclear technology, radiation studies
Joint Institute for Nuclear Research
2015-2024
National Nuclear Center of the Republic of Kazakhstan
2017-2024
Maharaja Sayajirao University of Baroda
2022
Al-Farabi Kazakh National University
2018-2021
Slovak Academy of Sciences
2018
Institute of Physics of the Slovak Academy of Sciences
2018
Comenius University Bratislava
2018
L. N. Gumilyov Eurasian National University
2015-2016
The Technical Design for the COMET Phase-I experiment is presented in this paper. an at J-PARC, Japan, which will search neutrinoless conversion of muons into electrons field aluminium nucleus ($\mu-e$ conversion, $\mu^- N \to e^- N$); a lepton flavor violating process. experimental sensitivity goal process $3.1\times10^{-15}$, or 90 % upper limit branching ratio $7\times 10^{-15}$, factor 100 improvement over existing limit. expected number background events 0.032. To achieve target and...
In the wake of recent measurements decays $B_c\to J/\psi\,\pi(K)$ and J/\psi\,\ell\nu_\ell$ reported by LHCb Collaboration we calculate form factors for J/\psi$ \eta_{c}$ transitions in full kinematical region within covariant confined quark model. Then use calculated to evaluate partial decay widths above-mentioned semileptonic nonleptonic $B_{c}$ meson. We find that theoretical predictions on ratios $\mathcal{R}_{K^{+}/ \pi^{+}}$ $\mathcal{R_{\pi^{+}/ \mu^{+} \nu}}$ are good agreement with...
SrTiO3-based photocatalysts have become widely used due to their excellent properties such as high thermal stability, photocorrosion resistance, and stable structure that can be modified by doping making composites. In this work, SrTiO3 powder was prepared from Sr(NO3)2 TiO2 precursors a simple chemical precipitation method followed calcination. It determined calcination at 900 °C treatment in nitric acid solution produced cubic particles without the presence of any impurities. addition,...
In the wake of exploring uncertainty in full angular distribution $B\ensuremath{\rightarrow}K\ensuremath{\pi}+{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ decay caused by presence intermediate scalar ${K}_{0}^{*}$ meson, we perform straightforward calculation $B({B}_{s})\ensuremath{\rightarrow}S$ ($S$ is a meson) transition form factors kinematical region within covariant quark model. We restrict ourselves to mesons below 1 GeV: ${a}_{0}(980)$, ${f}_{0}(500)$, ${f}_{0}(980)$,...
Environmental problems associated with water pollution caused by organic dyes have raised serious concerns. In this context, photocatalytic processes proven to be promising and environmentally friendly methods for purification utilising abundant solar energy. study, a SrTiO
In this work we study the semileptonic decays of Bc meson. We evaluated and transitions form factors in full kinematical region within covariant quark model. The calculated are used to evaluate meson it was defined ratios (Rηc , RJ/ψ, RD ,RD*) branching ratios, which will be hopefully tested on LHC experiments.We compare obtained results with from other theoretical approaches.
In the wake of recent measurements decays ${B}_{c}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{D}_{s}^{+}$ and ${B}_{c}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{D}_{s}^{*+}$ performed by LHCb ATLAS collaborations, we recalculate their branching fractions in framework covariant confined quark model. We compare obtained results with available experimental data, our previous findings, numbers from other approaches.
Our article is devoted to the study of rare ${B}_{s}\ensuremath{\rightarrow}\ensuremath{\phi}{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ decay where $\ensuremath{\ell}=\ensuremath{\mu}$, $\ensuremath{\tau}$. We compute relevant form factors in framework covariant quark model with infrared confinement full kinematical momentum transfer region. The calculated are used evaluate branching fractions and polarization observables cascade...
We treat the $Y(4260)$ resonance as a four-quark state in framework of covariant confining quark model. study two choices interpolating current, either molecular-type current which effectively corresponds to product $D$ and ${\overline{D}}_{1}$ currents or tetraquark one. In both cases, we calculate widths decays $Y(4260)\ensuremath{\rightarrow}{Z}_{c}(3900)+\ensuremath{\pi}$ $Y(4260)\ensuremath{\rightarrow}{D}^{(*)}+{\overline{D}}^{(*)}$. It is found that approaches mode...
We study the [Formula: see text] decays within Standard Model (SM) by using relevant transition form factors obtained from covariant confined quark model (CCQM) developed us. The and are calculated in full kinematic range. branching fractions then calculated. It is shown that our results an agreement with those other theoretical approaches. Currently, BaBar Belle collaborations provide us upper limits at 90% confidence limit. bounds roughly order of magnitude larger than SM predictions. This...
In this work, we tried to predict the parameters of [Formula: see text] meson. Simple assumptions gave us following text][Formula: text]MeV and (for text]GeV in covariant confined quark model). We calculated widths radiative decays mesons, where compared them with other theoretical works. It was shown that width meson is very sensitive mass as expected less size parameter text].
In this article, we study the rare decays corresponding to $b \to d$ transition in framework of covariant confined quark model. The form factors for channels $B^{+(0)} (π^{+(0)}, ρ^{+(0)},ω)$ and $B_s^0 K^{(*)0}$ are computed entire dynamical range momentum transfer squared. Using factors, compute branching fractions our results found be matching well with experimental data. We also ratios s$ using inputs from previous papers on s \ell^+\ell^-$ Further, model dependent independent...
We present an overview of our latest works dedicated to the study B(Bc) mesons decays. computed branching fractions B → K*(K)ℓ+ℓ− decay where ℓ = μ, τ, ν. compared obtained results with available experimental data and from other theoretical approaches. The semileptonic decays Bc meson is a big interest B-physics. found that prediction for ℛJ/ψ be underestimated in comparison LHCb-data.
The paper is devoted to the study of 𝐵→𝜔transition in framework covariant quark model, which a theoretical approach describe hadron dynamics taking into account structure. aim work calculate form factors for whole range transmitted momentum 𝑞2, as well investigate and lepton channel decay branchings, forward-backward asymmetry, angular observables, longitudinal transverse polarization 𝐵0→𝜔𝑙+𝑙−(where 𝑙-𝑒;𝜇;𝜏). scientific significance lies its contribution verification Standard Model...
The new version of the SANCphot integrator has been prepared for fast and stable numerical calculations up to two loops polarized light-by-light scattering. One-loop modules based on helicity formalism with massive particles two-loop massless inside are used. presented study is driven by potential photon beams probe high energy region. This a contribution research program CEPC project being under development in China.
The new version of the SANCphot integrator has been developed for fast and stable numerical calculations up to two loops polarized light-by-light scattering. One-loop modules based on helicity formalism with massive particles two-loop massless inside are used. presented study is driven by potential photon beams probe high energy region. This a contribution research program CEPC project being under development in China.
A brief review of the current state observed deviations theoretical predictions from experimental data in semileptonic decays $B$ and $B_c$ mesons is given. analysis these carried out, taking into account effects new physics, which appear due to introduction four-fermion operators, are absent basis Standard Model (SM) operators. The necessary form factors calculated within framework covariant quark model developed our papers.