Light scalars as tetraquarks: decays and mixing with quarkonia

Details Light scalars as tetraquarks: decays and mixing with quarkonia Light scalars as tetraquarks: decays and mixing with quarkonia

2007-11-20

arxiv.org/abs/0711.3126v2

Prog.Part.Nucl.Phys.61:133-139,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at the International School of Nuclear Physics, 29th Course, 'Quarks in Hadrons and Nuclei', Erice-Sicily, 16-24 Se

Scientific paper

10.1016/j.ppnp.2007.12.004

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.

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