We have studied the Dalitz plot of the e(+)e(-) -> pi(0)pi(0)gamma events (N(pi)0(pi)0 gamma similar to 65 000) collected at root s similar or equal to M-phi with the KLOE detector. In the dipion invariant mass (M-pi pi) region below 700MeV, the process under study is dominated by the non- resonant process e(+)e(-) -> omega pi(0) with omega -> pi(0)gamma whereas, for higher M-pi pi values, the radiative phi decay to the f(0)(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the sigma(600). For each model, we extract the f(0)(980) mass and its coupling to pi pi, K (K) over bar and to the phi.

Ambrosino, F., Antonelli, A., Antonelli, M., Bacci, C., Beltrame, P., Bencivenni, G., et al. (2007). Dalitz plot analysis of e(+)e(-)->pi(0)pi(0)gamma events at root s similar or equal to M phi with the KLOE detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 49(2), 473-488 [10.1140/epjc/s10052-006-0157-7].

Dalitz plot analysis of e(+)e(-)->pi(0)pi(0)gamma events at root s similar or equal to M phi with the KLOE detector

SANTOVETTI, EMANUELE;
2007

Abstract

We have studied the Dalitz plot of the e(+)e(-) -> pi(0)pi(0)gamma events (N(pi)0(pi)0 gamma similar to 65 000) collected at root s similar or equal to M-phi with the KLOE detector. In the dipion invariant mass (M-pi pi) region below 700MeV, the process under study is dominated by the non- resonant process e(+)e(-) -> omega pi(0) with omega -> pi(0)gamma whereas, for higher M-pi pi values, the radiative phi decay to the f(0)(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the sigma(600). For each model, we extract the f(0)(980) mass and its coupling to pi pi, K (K) over bar and to the phi.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/04 - Fisica Nucleare e Subnucleare
English
Con Impact Factor ISI
PHASE-SHIFT ANALYSIS; DECAY; MESONS; PI(0)PI(0)GAMMA; SEARCH; STATES; PIPI
Ambrosino, F., Antonelli, A., Antonelli, M., Bacci, C., Beltrame, P., Bencivenni, G., et al. (2007). Dalitz plot analysis of e(+)e(-)->pi(0)pi(0)gamma events at root s similar or equal to M phi with the KLOE detector. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 49(2), 473-488 [10.1140/epjc/s10052-006-0157-7].
Ambrosino, F; Antonelli, A; Antonelli, M; Bacci, C; Beltrame, P; Bencivenni, G; Bertolucci, S; Bini, C; Bloise, C; Bocchetta, S; Bocci, V; Bossi, F; Bowring, D; Branchini, P; Caloi, R; Campana, P; Capon, G; Capussela, T; Ceradini, F; Chi, S; Chiefari, G; Ciambrone, P; Conetti, S; De Lucia, E; De Santis, A; De Simone, P; De Zorzi, G; Dell'Agnello, S; Denig, A; Di Domenico, A; Di Donato, C; Di Falco, S; Di Micco, B; Doria, A; Dreucci, M; Felici, G; Ferrari, A; Ferrer, M; Finocchiaro, G; Fiore, S; Forti, C; Franzini, P; Gatti, C; Gauzzi, P; Giovannella, S; Gorini, E; Graziani, E; Incagli, M; Kluge, W; Kulikov, V; Lacava, F; Lanfranchi, G; Lee Franzini, J; Leone, D; Martini, M; Massarotti, P; Mei, W; Meola, S; Miscetti, S; Moulson, M; Muller, S; Murtas, F; Napolitano, M; Nguyen, F; Palutan, M; Pasqualucci, E; Passeri, A; Patera, V; Perfetto, F; Pontecorvo, L; Primavera, M; Santangelo, P; Santovetti, E; Saracino, G; Sciascia, B; Sciubba, A; Scuri, F; Sfiligoi, I; Spadaro, T; Testa, M; Tortora, L; Valente, P; Valeriani, B; Venanzoni, G; Veneziano, S; Ventura, A; Versaci, R; Xu, G
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/37350
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