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Tetraquark states and spectrum | | Elena Santopinto
; Giuseppe Galatà
; | | Date: |
5 Dec 2006 | | 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 $qar q$ mesons. The ground state tetraquark nonet is identified with $f_{0}(600)$, $kappa(800)$, $f_{0}(980)$, $a_{0}(980)$. | | Source: | arXiv, hep-ph/0612042 | | Services: | Forum | Review | PDF | Favorites | |
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