Phys. Rev. Lett. 93, 212002 (2004) - New Look at Scalar Mesons

New Look at Scalar Mesons

L. Maiani, F. Piccinini, A. D. Polosa, and V. Riquer

Phys. Rev. Lett. 93, 212002 – Published 16 November 2004

Abstract

Light scalar mesons are found to fit rather well a diquark-antidiquark description. The resulting nonet obeys mass formulas which respect, to a good extent, the Okubo-Zweig-Iizuka (OZI) rule. OZI allowed strong decays are reasonably reproduced by a single amplitude describing the switch of a $q \bar{q}$ pair, which transforms the state into two colorless 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.

Received 1 July 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.212002

©2004 American Physical Society

Authors & Affiliations

Università di Roma “La Sapienza” and I.N.F.N., Roma, Italy

F. Piccinini^†

I.N.F.N. Sezione di Pavia and Dipartimento di Fisica Nucleare e Teorica, via A. Bassi, 6, I-27100, Pavia, Italy

A. D. Polosa^‡

Centro Studi e Ricerche “E. Fermi,” via Panisperna 89/A-00184 Roma, Italy

CERN Theory Department, CH-1211, Switzerland

^*Electronic address: luciano.maiani@roma1.infn.it
^†Electronic address: fulvio.piccinini@pv.infn.it
^‡Electronic address: antonio.polosa@cern.ch
^§Electronic address: veronica.riquer@cern.ch

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Issue

Vol. 93, Iss. 21 — 19 November 2004

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