Confinement and parity doubling in heavy-light mesons

Abstract

In this paper, we study the chiral symmetry restoration in the hadronic spectrum in the framework of generalised Nambu-Jona-Lasinio quark models with instantaneous confining quark kernels. We investigate a heavy-light quarkonium and derive its bound-state equation in the form of a Schroedingerlike equation and, after the exact inverse Foldy-Wouthuysen transformation, in the form of a Diraclike quation. We discuss the Lorentz nature of confinement for such a system and demonstrate explicitly the effective chiral symmetry restoration for highly excited states in the mesonic spectrum. We give an estimate for the scale of this restoration.

RevTeX4, 21 pages, 6 Postscript figures, uses epsfig.sty, to appear in Phys.Rev.D

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• Chiral symmetry and the string description of excited hadrons
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• The large degeneracy of excited hadrons and quark models
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• Chiral restoration in excited nucleons versus SU(6)
• A quark model suggestion against Ds*(2317) and Ds*(2460) as chiral partners of standard Ds
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• Chiral symmetry breaking and the Lorentz nature of confinement
• Microscopic derivation of the pion coupling to heavy-light mesons
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• Mesons and tachyons with confinement and chiral restoration, and NA60
• Oscillator model for the relativistic fermion-boson system
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• Effect of Transverse Gluons on Chiral Restoration in Excited Mesons
• Chirally symmetric and confining dense matter with a diffused quark Fermi surface
• Real-time approach to quark confined systems at finite temperatures
• Quark models: What can they teach us?
• Effective Chiral Symmetry Restoration for Heavy-Light Mesons
• Quark mass functions and pion structure in Minkowski space