Pentaquarks in a relativistic quark model and nature of Theta-states

Details Pentaquarks in a relativistic quark model and nature of Theta-states Pentaquarks in a relativistic quark model and nature of Theta-states

2003-10-19

arxiv.org/abs/hep-ph/0310227v2

Phys.Rev.D71:076009,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, pdf, references added

Scientific paper

10.1103/PhysRevD.71.076009

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 Theta-pentaquarks. The mass spectra of the isotensor Theta-pentaquarks are calculated.

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