Описание
Particle Physics: Experiment and Phenomenology: QCD, Physics of hadrons
In this talk we will discuss the temperature dependence of color-magnetic confinement and color-electric confinement in gluodynamics and QCD. In the first case, it will be shown that the spatial string tension in gluodynamics, which is responsible for the color-magnetic confinement, can be calculated from two-gluon gluelump’s Green function, both for high and low temperatures. . In the...
A review of lattice QCD results on the properties of a hadronic flux tube is presented. The results obtained in gluodynamics and QCD at zero and non-zero temperatures are considered. Numerical results are compared with effective string theory predictions.
We present exact yet practical covariant equations of quantum field theory describing a tetraquark in terms of a mix of four-quark and two-quark states. A feature of our approach is that it avoids the overcounting problems that usually plague quantum field theory formulations of few-body covariant equations (the only exception being the two-body Bethe-Salpeter equation).
Although the model...
An up-to-date compilation of the world data on the $e^+e^- \to hadrons$ total cross section is used for dispersive evaluation of the leading order hadronic contribution to the muon anomalous magnetic moment $a_\mu = (g_\mu-2)/2$. Our value $a_\mu(had,LO) = (696.2 \pm 1.9_{e^+e^- exp.} \pm 2.1_{syst.})\times 10^{-10}$ is consistent with recent estimates by other groups. An impact of a recent...
The ALICE experiment is dedicated to the studies of the hot and dense QCD medium, the quark-gluon plasma, which can be created in ultrarelativistic heavy-ion collisions at the LHC. In this presentation, we will highlight recent ALICE results from LHC Run 2 that provide an important step towards our understanding of the QCD matter explored with heavy-ion collisions. We will also present latest...
