A5042994812- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Physics of Superconductivity and Magnetism
- Particle Detector Development and Performance
- High-pressure geophysics and materials
- Atomic and Subatomic Physics Research
Joint Institute for Nuclear Research
2011-2024
An approach to QCD vacuum as a medium describable in terms of statistical ensemble almost everywhere homogeneous Abelian (anti-)self-dual gluon fields is briefly reviewed. These play the role confining for color charged well underline mechanism realization chiral $S{U}_{\mathrm{L}}({N}_{f})\ifmmode\times\else\texttimes\fi{}S{U}_{\mathrm{R}}({N}_{f})$ and ${U}_{A}(1)$ symmetries. Hadronization formalism based on this leads manifestly defined quantum effective meson action. Strong,...
Transition form factors ${F}_{P{\ensuremath{\gamma}}^{*}{\ensuremath{\gamma}}^{(*)}}$ of pseudoscalar mesons are studied within the framework domain model confinement, chiral symmetry breaking, and hadronization. In this QCD vacuum is described by statistical ensemble wall networks which represents almost everywhere homogeneous Abelian (anti-)self-dual gluon field configurations. Calculations performed consistently with mass spectra mesons, their weak strong decay constants. Influence...
An impact of nonperturbatively-treated soft gluon modes on the value anomalous magnetic moment muon $a_\mu$ is studied within mean-field approach to QCD vacuum and hadronization. It shown that radial excitations vector mesons strongly enhance contribution hadronic polarization $a_\mu$, doubling one intermediate meson processes compared result for ground state mesons. The mean field also influences light-by-light scattering due Wilson line in quark propagators.
The leptonic and semileptonic decays of mesons are investigated within the domain model quantum chromodynamics (QCD) vacuum hadronization. is mean-field approach based on statistical ensemble almost everywhere homogeneous Abelian (anti-)self-dual gluon fields which reproduces main features low-energy QCD allows one to deduce a nonlocal effective meson action. Using this action, decay constants, form factors branching ratios evaluated simultaneously with masses mesons. results compared...
Dipole polarizabilities of light pseudoscalar mesons are calculated in the framework mean field approach to QCD vacuum and bosonization based on statistical ensemble almost everywhere homogeneous Abelian (anti-)self-dual gluon fields -- domain model vacuum. In this approach, one derives a nonlocal effective action meson which describes two-point correlation functions all possible strong, weak electromagnetic interactions including their excited states. Specifically, role intermediate scalar...
We briefly review motivation and results of the approach to QCD vacuum as a medium describable in terms statistical ensemble almost everywhere constant Abelian (anti-)self-dual gluon fields. An overview hadronization formalism based on this is presented. New for radial excitations light, heavy-light mesons heavy quarkonia are A possible interrelation between present holographic with harmonic confinement outlined.
An impact of the finite size effects on vacuum free energy density full QCD with $N_{\rm f}$ massless flavors in presence homogeneous (anti-)self-dual Abelian background gluon field is studied. The zero temperature four-dimensional spherical domain computed as a function strength $B$ and radius $R$. Calculation performed one-loop approximation improved by accounting for mixing quark quasi-zero modes normal modes, use $ζ$-function regularization. It indicated that, under plausible assumption...
Domain model of confinement, chiral symmetry breaking and hadronization is based on description QCD vacuum gluon configurations as an ensemble almost everywhere homogeneous Abelian (anti-)self-dual fields. The can be explicitly constructed domain wall network. We shortly overview this approach within framework discuss the effects polarization by strong electromagnetic It stressed that such play role trigger for deconfinement.
Domain model of QCD allows for description wide range meson observables, dynamical chiral symmetry breaking, and resolution $U_A(1)$ strong $CP$ problems. The purpose the present study is transition form-factor neutral pseudoscalar mesons, how they are influenced by typical vacuum configurations -- almost everywhere homogeneous Abelian (anti-)self-dual fields. Asymptotic behavior calculated pion supports Belle trend, but asymptotic value $Q^2F_{\pi\gamma^*\gamma}$ differs from prediction...
An approach to QCD vacuum as a medium describable in terms of statistical ensemble almost everywhere homogeneous Abelian (anti-)self-dual gluon fields is reviewed. These play the role confining for color charged well underline mechanism realization chiral SUL(Nf) × SUR(Nf) and UA(1) symmetries. Hadronization formalism based on this leads manifestly defined quantum effective meson action. Strong, electromagnetic weak interactions mesons are represented action nonlocal n-point interaction...