Critique of a Pion Exchange Model for Interquark Forces

Abstract

I describe four serious defects of a widely discussed pion exchange model for interquark forces: it doesn't solve the "spin-orbit problem" as advertised, it fails to describe the internal structure of baryon resonances, it leads to disastrous conclusions when extended to mesons, and it is not reasonably connected to the physics of heavy-light systems.

20 pages, 6 figures; some clarifications and references added

References in corpus (3)

• Origins of the baryon spectrum
• Meson-like Baryons and the Spin-Orbit Puzzle
• Orbitally Excited Baryons in Large N_c QCD

Cited by in corpus (50)

• Heavy-Quark QCD Exotica
• Quark-model study of few-baryon systems
• Sigma_c Dbar and Lambda_c Dbar states in a chiral quark model
• Relativistic Symmetry Suppresses Quark Spin-Orbit Splitting
• Excited Baryons in Lattice QCD
• Constituent quark model study of light- and strange-baryon spectra
• The d* dibaryon in the extended quark-delocalization, color-screening model
• Spin-3/2 Nucleon and Delta Baryons in Lattice QCD
• N phi state in chiral quark model
• Excited nucleons with chirally improved fermions
• High strangeness dibaryons in the extended quark delocalization, color screening model
• The internal structures of the nucleon resonances $N(1875)$ and $N(2120)$
• Study of $\eta$ photoproduction on the proton in a chiral constituent quark approach via one-gluon-exchange model
• Strong decay of low-lying $S_{11}$ and $D_{13}$ nucleon resonances to pseudoscalar mesons and octet baryons
• Effect of higher orbital angular momenta in the baryon spectrum
• Kaon-nucleon interaction in the extended chiral SU(3) quark model
• A unified meson-baryon potential
• NNLO nucleon parton distributions from a light-cone quark model dressed with its virtual meson cloud
• A quark-model based study of the triton binding energy
• Unquenching the Quark Model and Screened Potentials
• Delta K, Lambda K, and Sigma K states in the extended chiral SU(3) quark model
• Valence Quark Distribution in A=3 Nuclei
• Nonperturbative quark dynamics in a baryon
• $\eta$ production off the proton in a Regge-plus-chiral quark approach
• Chiral quark model with relativistic kinematics
• A possible Omega-pi molecular state
• Preliminary study of the anti-K N interaction in a chiral constituent quark model
• Negative Parity N* Resonances in an Extended GBE
• Chiral corrections to baryon properties with composite pions
• Electromagnetic splitting for mesons and baryons using dressed constituent quarks
• Spin-dependent forces of quarks in baryon
• Solving the radial Dirac equations: a numerical odyssey
• Quark spin coupling in baryons - revisited
• The di-Omega in the extended quark delocalization, color screening model
• Baryon spectra with instanton induced forces
• Spin force dependence of the parton distributions: the ratio $F_2^n(x,Q^2)/F_2^p(x,Q^2)$
• The wave function of $[70,1^{-}]$ baryons in the $1/N_c$ expansion
• Test of OPE and OGE through mixing angles of negative parity N* resonances in electromagnetic transitions
• Quark Forces from Hadron Spectroscopy
• Low-lying ud anti-s anti-s configurations in a non-relativistic constituent quark model
• An introduction to the quark model
• Reveal short range interactions between $u/d$ quarks in the $NN$, $D_{03}$, and $D_{30}$ systems
• No Radial Excitations in Low Energy QCD. I. Diquarks and Classification of Mesons
• Configuration Mixing of Quark States in Baryons
• Photo-production of Nucleon Resonances and Nucleon Spin Structure Function in the Resonance Region
• Static and dynamic properties of hadronic systems with heavy quarks b and c
• Charmed Mesons Have No Discernable Color-Coulomb Attraction
• Coherent Pair State of Pion in Constituent Quark Model
• Spin-orbit splittings in heavy-light mesons and Dirac equation
• Exploration of hyperfine interaction between constituent quarks via eta productions