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TETRAQUARK STATES AND SPECTRUM

    https://doi.org/10.1142/9789812708793_0030Cited by:1 (Source: Crossref)
    Abstract:

    A general classification of tetraquark states in terms of the spin-flavour, colour and spatial degrees of freedom has been constructed. The permutational symmetry properties of both the spin-flavour and orbital parts of the quark-quark and antiquark-antiquark subsystems are discussed in short. This classification is model indipendent and useful both for model-builders and experimentalists. An evaluation of the tetraquark spectrum is obtained from a generalization of a Iachello mass formula, originally developed for the mesons. The ground state tetraquark nonet is identified with f0(600), κ(800), f0 (980), a0(980).