A new look at scalar mesons

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Light scalar mesons are found to fit rather well a diquark-antidiquark description. The resulting nonet obeys mass formulae which respect, to a good extent, the OZI rule. OZI allowed strong decays are reasonably reproduced by a single amplitude describing the switch of a qbar-q pair, which transforms the state into two colourless pseudoscalar mesons. Predicted heavy states with one or more quarks replaced by charm or beauty are briefly described; they should give rise to narrow states with exotic quantum numbers.
4 pages, 1 figure, misprints corrected, references added, accepted for publication in Phys. Rev. Lett

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/177717

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0407017
 http://arxiv.org/abs/hep-ph/0407017
 Phys.Rev.Lett.93:212002,2004
 doi:10.1103/PhysRevLett.93.212002

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arXiv