We have studied the Dalitz plot of the e+e???0?0? events (N?0?0? ? 65 000) collected at ?s = M? with the KLOE detector. In the dipion invariant mass (M??) region below 700MeV, the process under study is dominated by the non-resonant process e+e? ???0 with ???0? whereas, for higher M?? values, the radiative ? decay to the f0(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the ?(600). For each model, we extract the f0(980) mass and its coupling to ??, K ¯K and to the ?.

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 / 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., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 49:(2007), pp. 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

BINI, Cesare;DE SANTIS, ANTONIO;DE ZORZI, Guido;DI DOMENICO, Antonio;FIORE, SALVATORE;GAUZZI, Paolo;LACAVA, Francesco;MARTINI, MATTEO;PATERA, Vincenzo;SCIUBBA, Adalberto;TESTA, Marianna;
2007

Abstract

We have studied the Dalitz plot of the e+e???0?0? events (N?0?0? ? 65 000) collected at ?s = M? with the KLOE detector. In the dipion invariant mass (M??) region below 700MeV, the process under study is dominated by the non-resonant process e+e? ???0 with ???0? whereas, for higher M?? values, the radiative ? decay to the f0(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the ?(600). For each model, we extract the f0(980) mass and its coupling to ??, K ¯K and to the ?.
2007
01 Pubblicazione su rivista::01a Articolo in rivista
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 / 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., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 49:(2007), pp. 473-488. [10.1140/epjc/s10052-006-0157-7]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/234196
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