Two-photon decay of light scalars: a comparison of tetraquark and quarkonium assignments

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Two-photon decays of light scalar mesons are discussed within the quarkonium and tetraquark asignements: in both cases the decay rate of the sigma resonances turns out to be smaller than 1 keV.
Talk given at the XII International Conference on Hadron Spectroscpy, (Hadron 07), Frascati (Rome), 8-13 October 2007

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/225070

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0712.0186
 http://arxiv.org/abs/0712.0186

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arXiv