Relativistic quark model and pentaquark spectroscopy

Details Relativistic quark model and pentaquark spectroscopy Relativistic quark model and pentaquark spectroscopy

2002-11-27

arxiv.org/abs/hep-ph/0211436v1

Int.J.Mod.Phys. E12 (2003) 793-808

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, pdf

Scientific paper

10.1142/S0218301303001582

The relativistic five-quark equations are found in the framework of the dispersion relation technique. The solutions of these equations using the method based on the extraction of leading singularities of the amplitudes are obtained. The five-quark amplitudes for the low-lying pentaquarks are calculated under the condition that flavor SU(3) symmetry holds. The poles of five-quark amplitudes determine the masses of the lowest pentaquarks. The mass spectra of pentaquarks which contain only light quarks are calculated. The calculation of pentaquark amplitudes estimates the contributions of three subamplitudes. The main contributions to the pentaquark amplitude are determined by the subamplitudes, which include the meson states.

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