Color symmetry and confinement as an underlying superconformal structure in holographic QCD

de Téramond, Guy F.; Brodsky, Stanley J

doi:10.1142/s0217751x24410070

Color symmetry and confinement as an underlying superconformal structure in holographic QCD

Journal Article · Thu May 09 00:00:00 EDT 2024 · International Journal of Modern Physics A

DOI:https://doi.org/10.1142/s0217751x24410070· OSTI ID:2447222

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Univ. of Costa Rica, San Jose (Costa Rica); SLAC
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Dedicated to the memory of our colleague, Harald Fritzsch, who, together with Murray Gell-Mann, introduced the color quantum number as the exact symmetry responsible for the strong interaction, thus establishing quantum chromodynamics (QCD) as a fundamental non-Abelian gauge theory. A basic understanding of hadron properties, however, such as confinement and the emergence of a mass scale, from first principles QCD has remained elusive: Hadronic characteristics are not explicit properties of the QCD Lagrangian and perturbative QCD, so successful in the large transverse momentum domain, is not applicable at large distances. In this article, we shall examine how this daunting obstacle is overcome in holographic QCD with the introduction of a superconformal symmetry in anti de Sitter (AdS) space which is responsible for confinement and the introduction of a mass scale within the superconformal group. When mapped to light-front coordinates in physical spacetime, this approach incorporates supersymmetric relations between the Regge trajectories of meson, baryon and tetraquark states which can be visualized in terms of specific SU(3)_C color representations of quarks. Finally, we will also briefly discuss here the implications of holographic models for QCD color transparency in view of the present experimental interest.

View Accepted Manuscript (DOE)

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 2447222

Journal Information:: International Journal of Modern Physics A, Journal Name: International Journal of Modern Physics A Journal Issue: 09n10 Vol. 39; ISSN 0217-751X

Publisher:: World ScientificCopyright Statement

Country of Publication:: United States

Language:: English

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