Light scalars as tetraquarks: decays and mixing with quarkonia

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The tetraquark assignement for light scalar states below 1 GeV is discussed on the light of strong decays. The next-to-leading order in the large-N expansion for the strong decays is considered. Mixing with quarkonia states above 1 GeV is investigated within a chiral approach and the inclusion of finite-width effects is taken into account.
Talk given at the International School of Nuclear Physics, 29th Course, 'Quarks in Hadrons and Nuclei', Erice-Sicily, 16-24 September 2007. To appear in Prog. Part. Nucl. Phys. 10 pages, 1 figure

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/199706

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0711.3126
 http://arxiv.org/abs/0711.3126
 Prog.Part.Nucl.Phys.61:133-139,2008
 doi:10.1016/j.ppnp.2007.12.004

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arXiv