Tetraquarks with charm in coupled-channel formalism

Details Tetraquarks with charm in coupled-channel formalism Tetraquarks with charm in coupled-channel formalism

2008-04-29

arxiv.org/abs/0804.4567v2

Phys.Rev.D78:116004,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, pdf, minor typos in the text corrected

Scientific paper

10.1103/PhysRevD.78.116004

The relativistic four-quark equations are found in the framework of coupled-channel formalism. The dynamical mixing of the meson-meson states with the four-quark states is considered. The approximate solutions of these equations using the method based on the extraction of leading singularities of the amplitudes are obtained. The four-quark amplitudes of cryptoexotic mesons including the quarks of three flavours (u, d, s) and the charmed quark are constructed. The poles of these amplitudes determine the masses of tetraquarks. The mass values of low-lying tetraquarks are calculated.

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