Chiral symmetry restoration and the string picture of hadrons

Abstract

QCD string picture of highly excited hadrons very naturally explains parity doubling once the chiral symmetry is restored high in the spectrum. In particular, the spin-orbit and tensor interactions of quarks at the ends of the string, related to dynamics of the string, vanish. High in the spectrum there appears higher degree of degeneracy, namely parity doublets with different angular momentum cluster around energy of the string in the given quantum state.

7 pages, LaTeX, 2 figs. The paper has been further expanded in order to make the point and physics more clear. To appear in Phys. Lett. B

References in corpus (6)

• I = 0 C = +1 mesons from 1920 to 2410 MeV
• Chiral multiplets versus parity doublets in highly excited baryons
• Does one observe chiral symmetry restoration in baryon spectrum?
• Partial wave analysis of pbar-p annihilation channels in flight with I=1, C=+1
• SU(2)_L * SU(2)_R and U(1)_A restorations high in the hadron spectrum and what it tells us about
• Combined analysis of meson channels with I=1, C = -1 from 1940 to 2410 MeV

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