Chiral symmetry and pentaquarks

Details Chiral symmetry and pentaquarks Chiral symmetry and pentaquarks

2004-12-18

arxiv.org/abs/hep-ph/0412272v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Combined talks at Electron-Nucleus Scattering (Elba, June 20-25, 2004) and Pentaquarks-04 (Osaka, July 20-23, 2004) workshops.

Scientific paper

Spontaneous chiral symmetry breaking, mesons and baryons are illustrated in the language of the Dirac theory. Various forces acting between quarks inside baryons are discussed. I explain why the naive quark models typically overestimate pentaquark masses by some 500 MeV and why in the fully relativistic approach to baryons pentaquarks turn out to be light. I discuss briefly why it can be easier to produce pentaquarks at low than at high energies.

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