KLOE has analysed ~ 16.6 pb-1 of total 30 pb-1 collected at DAΦNE by the end of 2000. The preliminary results for the branching ratios BR(φ → f0(980)γ) = (23.7 ± 0.6stat) × 10-5 and BR(φ → a0(980)γ) = (5.8 ± 0.5stat) × 10-5 lead to a ratio BR(φ → f0(980)γ)/BR(φ → a0(980)γ) = 4.1 ± 0.4 stat with a systematic error which will not exceed 10%. The ratio BR(φ → η′γ)/BR(φ → ηγ) has been measured to about 10% accuracy leading to a very accurate determination of the mixing angle and to the most accurate determination of BR(φ → η′γ) to date, BR(φ → η′γ) = (6.8 ± 0.6 ± 0.5) · 10-5.

Detection of phi -> a(0)(980)gamma, f(0)(980)gamma and phi ->eta gamma, phi ->eta 'gamma with the KLOE detector at DA Phi NE / Lanfranchi, G., Aloisio, A., Ambrosino, F., Antonelli, A., Antonelli, M., Bacci, C., Barbiellini, G., Bellini, F., Bencivenni, G., Bertolucci, S., Bini, C., Bloise, C., Bocci, V., Bossi, F., Branchini, P., Bulychjov, S.a., Cabibbo, G., Caloi, R., Campana, P., Capon, G., et al.. - (2002), pp. 268-273. (International Conference on Structure and Interactions of the Photon/14th International Workshop Ascona, SWITZERLAND SEP 02-07, 2001) [10.1142/9789812777157_0054].

Detection of phi -> a(0)(980)gamma, f(0)(980)gamma and phi ->eta gamma, phi ->eta 'gamma with the KLOE detector at DA Phi NE

BELLINI, Fabio;BINI, Cesare;CALOI, Rita;DE ZORZI, Guido;DI DOMENICO, Antonio;FRANZINI, Paolo;GAUZZI, Paolo;LACAVA, Francesco;PASSALACQUA, LUCA;PATERA, Vincenzo;SCIUBBA, Adalberto;
2002

Abstract

KLOE has analysed ~ 16.6 pb-1 of total 30 pb-1 collected at DAΦNE by the end of 2000. The preliminary results for the branching ratios BR(φ → f0(980)γ) = (23.7 ± 0.6stat) × 10-5 and BR(φ → a0(980)γ) = (5.8 ± 0.5stat) × 10-5 lead to a ratio BR(φ → f0(980)γ)/BR(φ → a0(980)γ) = 4.1 ± 0.4 stat with a systematic error which will not exceed 10%. The ratio BR(φ → η′γ)/BR(φ → ηγ) has been measured to about 10% accuracy leading to a very accurate determination of the mixing angle and to the most accurate determination of BR(φ → η′γ) to date, BR(φ → η′γ) = (6.8 ± 0.6 ± 0.5) · 10-5.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/195423
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