Relativistic five-quark equations and negative parity pentaquarks

Details Relativistic five-quark equations and negative parity pentaquarks Relativistic five-quark equations and negative parity pentaquarks

2005-04-27

arxiv.org/abs/hep-ph/0504254v2

Phys.Rev. D72 (2005) 016002

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, pdf, published version

Scientific paper

10.1103/PhysRevD.72.016002

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 the leading singularities of the amplitudes are obtained. The five-quark amplitudes for the low-lying pentaquarks including the u, d, s- quarks are calculated. The poles of these amplitudes determine the masses of the negative parity pentaquarks with I = 0, 1 and spin 3/2-, 5/2-. The mass of the lowest pentaquark with I = 0 and spin 3/2- is equal to 1514 MeV.

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