Highly Excited Hadrons in QCD and Beyond
M. Shifman
TL;DR
This paper explores high radial excitations in QCD, focusing on chiral symmetry restoration and the universality of rho-meson coupling, revealing new insights and connections to historical proposals.
Contribution
It presents new results on chiral symmetry restoration and rho-meson coupling universality, linking AdS/QCD formulas to earlier theoretical proposals.
Findings
Evidence of chiral symmetry restoration in excited mesons and baryons
Universal rho-meson coupling observed in QCD and AdS/QCD models
A novel relation between AdS/QCD formulas and Migdal's 1977 proposal
Abstract
I discuss two issues related to high "radial" excitations which attracted much attention recently: (i) chiral symmetry restoration in excited mesons and baryons, and (ii) universality of the rho-meson coupling in QCD and AdS/QCD. New results are reported and a curious relation between an AdS/QCD formula and 1977 Migdal's proposal is noted.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · High-Energy Particle Collisions Research