DbarN interaction in a color-confining chiral quark model

Abstract

We investigate the low-energy elastic DbarN interaction using a quark model that confines color and realizes dynamical chiral symmetry breaking. The model is defined by a microscopic Hamiltonian inspired in the QCD Hamiltonian in Coulomb gauge. Constituent quark masses are obtained by solving a gap equation and baryon and meson bound-state wave functions are obtained using a variational method. We derive a low energy meson-nucleon potential from a quark-interchange mechanism whose ingredients are the quark-quark and quark-antiquark interactions and baryon and meson wave functions, all derived from the same microscopic Hamiltonian. The model is supplemented with (sigma,rho,omega,a0) single-meson exchanges to describe the long-range part of the interaction. Cross-sections and phase shifts are obtained by iterating the quark-interchange plus meson-exchange potentials in a Lippmann-Schwinger equation. Once model parameters in meson exchange potential are fixed to describe the low-energy experimental phase shifts of the K+N and K0N reactions, predictions for Dbar0N and D-N reactions are obtained without introducing new parameters.

13 latex pages, 7 figures

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Cited by in corpus (16)

• Heavy Hadrons in Nuclear Matter
• First study of the two-body scattering involving charm hadrons
• Charmed mesons with a symmetry-preserving contact interaction
• Strong couplings and form factors of charmed mesons in holographic QCD
• Decay constants of the pion and its excitations in holographic QCD
• Exotic dibaryons with a heavy antiquark
• Decay widths of bottomonium states in matter -- a field theoretic model for composite hadrons
• Spin-isospin Kondo effects for ${\Sigma }_c$ and ${\Sigma }_c^{\ast }$ baryons and $\bar{D}$ and ${\bar{D}}^{\ast }$ mesons
• SU(4) flavor symmetry breaking in D-meson couplings to light hadrons
• Hadronic molecules with a $\bar{D}$ meson in a medium
• Open charm and bottom meson-nucleon potentials à la nuclear force
• Charmed mesons at finite temperature and chemical potential
• States generated in the $K$-multi-$\rho$ interactions
• Finding Interaction Mechanism between Exotic Molecule and Conventional Hadron
• Effect of Transverse Gluons on Chiral Restoration in Excited Mesons
• Mesonic Decay of Charm Hypernuclei ${\Lambda }_c^{+}$