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, Fabio; Bencivenni, G; Bertolucci, S; Bini, Cesare; Bloise, C; Bocci, V; Bossi, F; Branchini, P; Bulychjov, Sa; Cabibbo, G; Caloi, Rita; Campana, P; Capon, G; Carboni, G; Casarsa, M; Casavola, V; Cataldi, G; Ceradini, F; Cervelli, F; Cevenini, F; Chiefari, G; Ciambrone, P; Conetti, S; DE LUCIA, E; DE ROBERTIS, G; DE SIMONE, P; DE ZORZI, Guido; Dell'Agnello, S; Denig, A; DI DOMENICO, Antonio; DI DONATO, C; DI FALCO, S; Doria, A; Dreucci, M; Erriquez, O; Farilla, A; Felici, G; Ferrari, A; Ferrer, Ml; Finocchiaro, G; Forti, C; Franceschi, A; Franzini, Paolo; Gatti, C; Gauzzi, Paolo; Giannasi, A; Giovannella, S; Gorini, E; Grancagnolo, F; Graziani, E; Han, Sw; Incagli, M; Ingrosso, L; Kluge, W; Kuo, C; Kulilov, V; Lacava, Francesco; Lanfranchi, G; LEE FRANZINI, J; Leone, D; Lu, F; Marternianov, M; Matsyuk, M; Mei, W; Menicucci, A; Merola, L; Messi, R; Miscetti, S; Moulson, M; Muller, S; Murtas, F; Napolitano, M; Nedosekin, A; Nguyen, F; Palutan, M; Paoluzi, L; Pasqualucci, E; Passalacqua, Luca; Passeri, A; Patera, Vincenzo; Petrolo, E; Picca, D; Pirozzi, G; Pontecorvo, L; Primavera, M; Ruggieri, F; Santangelo, P; Santovetti, E; Saracino, G; Schamberger, Rd; Scascia, B; Sciubba, Adalberto; Scuri, F; Sfiligoi, I; Shan, J; Silano, P; Spadaro, T; Spiriti, E; Tong, Gl; Tortora, L; Valente, E; Valente, P; Valeriani, B; Venanzoni, G; Veneziano, S; Ventura, A; Wu, Y; Xu, G; Yu, Gw; Zema, Pf; Zhou, Y.. - (2002), pp. 268-273. (Intervento presentato al convegno International Conference on Structure and Interactions of the Photon/14th International Workshop tenutosi a Ascona, SWITZERLAND nel 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
