Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 7, Pages -Publisher
SPRINGER
DOI: 10.1088/1126-6708/2009/07/073
Keywords
1/N Expansion; QCD; Supersymmetric gauge theory; Confinement
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Funding
- STFC [ST/G000506/1, PP/E007228/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G000506/1, PP/E007228/1] Funding Source: researchfish
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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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