Study of the decay phi -> f(0)(980)gamma -> pi (+) pi(-) gamma with the KLOE detector

Autor:	Ambrosino, F, Antonelli, A, Antonelli, M, Bacci, C, Beltrame, P, Bencivenni, G, Bertolucci, S, Bini, C, Bloise, C, Bocci, V, Bossi, F, Bowring, D, Branchini, P, Caloi, R, Campana, P, Capon, G, Capussela, T, Ceradini, E, 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, Camilla, Di Falco, S, Di Micco, B, Doria, A, Dreucci, A, Felici, G, Ferrari, A, Ferrer, Ml, 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, E, Lanfranchi, G, Lee Franzini, J, Leone, D, Martini, M, Massarotti, P, Mei, W, Meola, S, Miscetti, S, Moulson, M, Muller, S, Murtas, E, Napolitano, M, Nguyen, E, 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, Ventura, S, Versaci, R, Xu, G.
Přispěvatelé:	Ambrosino, F, Antonelli, A, Antonelli, M, Bacci, C, Beltrame, P, Bencivenni, G, Bertolucci, S, Bini, C, Bloise, C, Bocci, V, Bossi, F, Bowring, D, Branchini, P, Caloi, R, Campana, P, Capon, G, Capussela, T, Ceradini, Filippo, 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, Biagio, Doria, A, Dreucci, A, Felici, G, Ferrari, A, Ferrer, Ml, 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, E, Lanfranchi, G, Lee Franzini, J, Leone, D, Martini, M, Massarotti, P, Mei, W, Meola, S, Miscetti, S, Moulson, M, Muller, S, Murtas, E, Napolitano, M, Nguyen, E, 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, Ventura, S, Versaci, R, Xu, G.
Jazyk:	angličtina
Rok vydání:	2006
Předmět:	radiative decays of mesons decays of other mesons Settore FIS/04 - Fisica Nucleare e Subnucleare
Popis:	We measured, with the KLOE detector, the spectrum of pi(+)pi(-) invariant mass in a sample of 6.7 x 10(5) e(+)e(-) -> pi(+)pi(-)gamma events with the photon at large polar angle (theta(gamma) > 45 degrees) at a centre of mass energy root s around the phi mass. We observe in this spectrum a clear contribution from the intermediate process phi -> f(0)(980)gamma. A sizeable effect is also observed in the distribution of the pion forward-backward asymmetry. We use different theoretical models to fit the spectrum and we determine the to mass and coupling constants to the phi, to pi(+)pi(-) and to KK. (c) 2006 Elsevier B.V. All rights reserved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a0b227e7a292ca8c42fe4be45c96c174 http://hdl.handle.net/2108/39286 Zobrazit plný text záznamu