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Superconformal baryon-meson symmetry and light-front holographic QCD

We construct an effective QCD light-front Hamiltonian for both mesons and baryons in the chiral limit based on the generalized supercharges of a superconformal algebra. The superconformal construction is shown to be equivalent to a semiclassical approximation to light-front QCD and its embedding in...

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Hauptverfasser: Dosch, Hans Günter (VerfasserIn) , Téramond Peralta, Guy F. de (VerfasserIn) , Brodsky, S. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 10 April 2015
In: Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2015, Jahrgang: 91, Heft: 8
ISSN:1550-2368
DOI:10.1103/PhysRevD.91.085016
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.91.085016
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.91.085016
Volltext
Verfasserangaben:Hans Günter Dosch, Guy F. de Téramond, Stanley J. Brodsky

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520 |a We construct an effective QCD light-front Hamiltonian for both mesons and baryons in the chiral limit based on the generalized supercharges of a superconformal algebra. The superconformal construction is shown to be equivalent to a semiclassical approximation to light-front QCD and its embedding in anti-de Sitter space. The specific breaking of conformal invariance inside the superconformal algebra uniquely determines the effective confinement potential. The generalized supercharges connect the baryon and meson spectra to each other in a remarkable manner. In particular, the π/b1 Regge trajectory is identified as the superpartner of the nucleon trajectory. However, the lowest-lying state on this trajectory, the π-meson, is massless in the chiral limit and has no supersymmetric partner. 
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