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Evidence that the a0(980) and f0(980) are not elementary particles | | V. Baru
; J. Haidenbauer
; C. Hanhart
; Yu. Kalashnikova
; A. Kudryavtsev
; | | Date: |
12 Aug 2003 | | Journal: | Phys.Lett. B586 (2004) 53-61 | | Subject: | hep-ph | | Abstract: | We study the interesting problem of whether it is possible to distinguish composite from elementary particles. In particular we generalize a model-independent approach of S. Weinberg to the case of unstable particles. This allows us to apply our formalism to the case of the a0(980) and f0(980) resonances and to address the question whether these particles are predominantly genuine, confined quark states (of $ar q q$ or $qqar qar q$ structure) or governed by mesonic components. | | Source: | arXiv, hep-ph/0308129 | | Services: | Forum | Review | PDF | Favorites | |
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