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arXiv · hep-ph/0612042

Tetraquark states and spectrum

Elena Santopinto·Giuseppe Galatà
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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 $q\bar q$ mesons. The ground state tetraquark nonet is identified with $f_{0}(600)$, $κ(800)$, $f_{0}(980)$, $a_{0}(980)$.

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Elena Santopinto, Giuseppe Galatà. 2006-12-05. Tetraquark states and spectrum. https://doi.org/10.1142/9789812708793_0030

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