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arXiv · 0901.4508

Degeneracy Between the Regge Slope of Mesons and Baryons from Supersymmetry

Adi Armoni·Agostino Patella
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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.

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Adi Armoni, Agostino Patella. 2009-01-28. Degeneracy Between the Regge Slope of Mesons and Baryons from Supersymmetry. https://doi.org/10.1088/1126-6708/2009/07/073

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