The results obtained by the KLOE Collaboration on light meson spectroscopy are presented. The radiative decay φ→ηγ have been used to study several η decay channels. The Dalitz plot distributions of the η→3π decays, both in charged and neutral final states have been measured. The box anomaly contribution in η→π + π -γ has been investigated in, and the rare decays η→π 0γγ, η→π +π -e +e - and η→e +e -e +e - have been measured. Also the strategy for the measurement of the transition form factor of φ→ηe +e - is described. The radiateve process φ→η′γ has been used to study the η′→ ηππ decay channels, obtaining a measurement of the pseudoscalar mixing angle, and finding an evidence for a gluonium content of η′. The decays φ→PPγ where P means a pseudoscalar meson, have been exploited to investigate the light scalar mesons, f 0(980), a 0(980), and σ(600). plings of the scalar mesons to KK̄, ππ or ππ 0, and to the φ resonance have been measured. The prospects for the new KLOE-2 data-taking just started at the upgraded DAΦNE with an upgraded detector are described.
KLOE results on light meson spectroscopy and prospects for KLOE-2 / Gauzzi, Paolo. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6596. - 349:1(2012), p. 012002. (Intervento presentato al convegno International Workshop on Meson Production at Intermediate and High Energies tenutosi a Messina; Italy) [10.1088/1742-6596/349/1/012002].
KLOE results on light meson spectroscopy and prospects for KLOE-2
GAUZZI, Paolo
2012
Abstract
The results obtained by the KLOE Collaboration on light meson spectroscopy are presented. The radiative decay φ→ηγ have been used to study several η decay channels. The Dalitz plot distributions of the η→3π decays, both in charged and neutral final states have been measured. The box anomaly contribution in η→π + π -γ has been investigated in, and the rare decays η→π 0γγ, η→π +π -e +e - and η→e +e -e +e - have been measured. Also the strategy for the measurement of the transition form factor of φ→ηe +e - is described. The radiateve process φ→η′γ has been used to study the η′→ ηππ decay channels, obtaining a measurement of the pseudoscalar mixing angle, and finding an evidence for a gluonium content of η′. The decays φ→PPγ where P means a pseudoscalar meson, have been exploited to investigate the light scalar mesons, f 0(980), a 0(980), and σ(600). plings of the scalar mesons to KK̄, ππ or ππ 0, and to the φ resonance have been measured. The prospects for the new KLOE-2 data-taking just started at the upgraded DAΦNE with an upgraded detector are described.File | Dimensione | Formato | |
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