The KLOE 1 experiment running at the φ-factory DAΦNE has collected ∼ 450 pb-1 in the 2001-2002 data taking. We report preliminary results on light meson spectroscopy based on this data sample obtained studying φ 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 η → πππ dynamics through a Dalitz plot analysis gives the possibility to confront with theory expectations in view of extracting information on the light quarks mass difference. Finally, the branching ratio for the η → π 0 γγ decay is compared with previous measurements and with the expectations from Chiral Perturbation Theory.
Kloe results on f0(980), a0(980) scalars and η decays / Ambrosino, F.; Corvino, M.; Massarotti, P.; Mirra, M.; Napolitano, M.; Saracino, G.. - 39:(2005), pp. 241-248. (Intervento presentato al convegno 19th Les Rencontres de Physique de la Vallee d'Aoste 2005: Results and Perspectives in Particle Physics - 19th Physics Conference in the Aosta Valley: Results and Perspectives in Particle Physics 2005 tenutosi a La Thuile, Aosta Valley, ita nel 2005).
Kloe results on f0(980), a0(980) scalars and η decays
Ambrosino F.;Corvino M.;Massarotti P.;Napolitano M.;Saracino G.
2005
Abstract
The KLOE 1 experiment running at the φ-factory DAΦNE has collected ∼ 450 pb-1 in the 2001-2002 data taking. We report preliminary results on light meson spectroscopy based on this data sample obtained studying φ 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 η → πππ dynamics through a Dalitz plot analysis gives the possibility to confront with theory expectations in view of extracting information on the light quarks mass difference. Finally, the branching ratio for the η → π 0 γγ decay is compared with previous measurements and with the expectations from Chiral Perturbation Theory.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
