Tetraquarks with charm in coupled-channel formalism

Journal Article · Mon Dec 01 00:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.116004· OSTI ID:21251052

Gerasyuta, S M ^[1]; Kochkin, V I ^[1]

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1. Department of Theoretical Physics, St. Petersburg State University, 198904, Saint Petersburg (Russian Federation)

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.

• OSTI ID: 21251052
• Journal Information: Physical Review. D, Particles Fields, Vol. 78, Issue 11; Other Information: DOI: 10.1103/PhysRevD.78.116004; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
COUPLED CHANNEL THEORY
EQUATIONS
EXTRACTION
MASS
MATHEMATICAL SOLUTIONS
MESONS
MIXING
QUARKS
RELATIVISTIC RANGE
SINGULARITY