KLOE results on f0(980), a0(980) scalars and eta decays
KLOE Collaboration
Abstract
The KLOE experiment running at the phi-factory DAPHNE has collected ~ 450 pb(-1) in the 2001--2002 data taking. We report preliminary results on light meson spectroscopy based on this data sample; particles are all produced through phi radiative decays. The nature of f0(980) and a0(980) is investigated by studying the shape of the resulting mass spectra, which is sensitive to their structure. A detailed study of the eta --> pi pi pi dynamics through a Dalitz plot analysis gives the possibility to extract information on the quark mass difference. Finally, the branching ratio for the eta --> pi0 gamma gamma decay is compared with previous measurements and with the expectations from Chiral Perturbation Theory.
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