2025/05/16 by Oleg Andreev, Andreev, Oleg · 2 citations
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #High-Energy Particle Collisions Research #Quantum and Classical Electrodynamics
paper · pdf · doi:10.48550/arxiv.2505.11234
We continue our investigation of the effective string model for the triply heavy quark system, mimicking that in pure SU(3) gauge theory. We present analytical and numerical studies of the three-quark potential for isosceles and collinear geometries. In the general case, we derive the asymptotic expression of the potential in the infrared limit. Here we also demonstrate the universality of the string tension and interpret the transition between two distinct regimes, occurring when one of the triangle's angles formed by the quarks is equal to (2)/(3)π, as a breaking of permutational symmetry. This symmetry breaking implies the emergence of a heavy quark dressed by gluons, transforming in the two-index antisymmetric representation. Additionally, we discuss various aspects of the Y- and Δ-laws, diquarks, and connections to lattice QCD.