A new look at scalar mesons

By L. Maiani, A. Polosa, F. Piccinini, V. Riquer. 2004

251 citations recorded by the source corpus.

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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3c5f13a12583082bf1fbe1d6933e917709202b22

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In Nuclear and High Energy Physics

1. Alessandro Pilloni
2. A. Esposito
3. J. Lange
4. S. Stone
5. A. Ali
6. A. Polosa

Citations in the corpus

• Multiquark Resonances (2016, background): “Light-light diquarks and their possible role in light scalar meson spectroscopy are discussed in [108, 109].”
• Exotics: Heavy pentaquarks and tetraquarks (2017, methodology): “w rm conclusions. In the absence of reliable rst principle calculations, approximate phenomenological methods are the way forward. In that spirit, an eective Hamiltonian approach has been often used [41,42,340{343], in which tetraquarks are assumed to be diquark-antidiquark objects, bound by gluonic”