Pentaquark states in a chiral potential
Abstract
We discuss a possible interpretation for the pentaquark baryon + which has an exotic quantum number of strangeness S = +1. The role of the pion which modifies the structure of single-particle levels of quarks is examined. When the pion field is sufficiently strong, the ground state of five quarks for + acquires positive parity. If this is the case, an excited state may appear slightly above the ground state with negative parity.
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