Light-front wave functions of mesons, baryons and pentaquarks, with topology-induced local 4-quark interaction

Abstract

We calculate light-front wave functions of mesons, baryons and pentaquarks in a model including constituent mass (representing chiral symmetry breaking), harmonic confining potential, and 4-quark local interaction of 't Hooft type. The model is a simplified version of that used by Jia and Vary. The method used is numerical diagonalization of the Hamiltonian matrix, with certain functional basis. We found that the nucleon wave function displays strong diquar correlations, unlike that for Delta (decuplet) baryon. We also calculate 3-quark-5-quark admixture to baryons, and the resulting antiquark sea PDF.

arXiv commentv2 has two new figs, and discusses the issue of whether motion inside nucleon resonances can be chaotic

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Cited by in corpus (6)

• Pion and Kaon parton distributions in the QCD instanton vacuum
• Nonperturbative quark-antiquark interactions in mesonic form factors
• The Myriad Uses of Instantons
• Hadronic structure on the light-front IV: Heavy and light Baryons
• Hadronic structure on the light-front V. Diquarks, Nucleons and multiquark Fock components
• On the second Gegenbauer moment of $\rho$-meson distribution amplitude