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arXiv · hep-ph/0407017

A new look at scalar mesons

L. Maiani·A. Polosa·F. Piccinini·V. Riquer
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Abstract

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.

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L. Maiani, A. Polosa, F. Piccinini, V. Riquer. 2004-10-05. A new look at scalar mesons. https://doi.org/10.1103/physrevlett.93.212002

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