A new look at scalar mesons
High Energy Physics - Phenomenology
2008-11-26 v2
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.
Keywords
Cite
@article{arxiv.hep-ph/0407017,
title = {A new look at scalar mesons},
author = {L. Maiani and A. Polosa and F. Piccinini and V. Riquer},
journal= {arXiv preprint arXiv:hep-ph/0407017},
year = {2008}
}
Comments
4 pages, 1 figure, misprints corrected, references added, accepted for publication in Phys. Rev. Lett