Degeneracy Between the Regge Slope of Mesons and Baryons from Supersymmetry

Abstract

We consider the degeneracy between the Regge slope of mesons and baryons in QCD. We argue that within the "orientifold large-N approximation" asymptotically massive mesons and baryons become supersymmetric partners and hence degenerate. To this end, we generalize QCD by a SU(N) theory with a quark in the two-index antisymmetric representation. We show that in this framework the meson is represented by an oriented bosonic QCD-string and the baryon is represented by an un-oriented fermionic QCD-string. At large-N, due to an equivalence with super Yang-Mills, the tensions of the bosonic and the fermionic strings coincide. Our description of mesons and baryons as oriented and un-oriented bosonic and fermionic QCD-strings is in full agreement with the spectra of open strings in the dual type 0' string theory.

v2: extended version. Appendices and references added

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Cited by in corpus (10)

• Superconformal Baryon-Meson Symmetry and Light-Front Holographic QCD
• Large-N reduction in QCD-like theories with massive adjoint fermions
• Excited mesons, baryons, glueballs and tetraquarks: Predictions of the Holography Inspired Stringy Hadron model
• Spectroscopy of SU(4) gauge theory with two flavors of sextet fermions
• Light baryon masses in different large-$N_c$ limits
• Baryon resonances in large $N_c$ QCD
• The decay width of stringy hadrons
• k-String tensions and the 1/N expansion
• Color Superconductivity at Large N: A New Hope
• Alternative large Nc baryons and holography