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 RID C-6238-2011 RID D-2250-2011 RID G-6301-2011 RID C-9722-2011 RID D-2615-2009 RID A-6640-2010. 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 RID C-6238-2011 RID D-2250-2011 RID G-6301-2011 RID C-9722-2011 RID D-2615-2009 RID A-6640-2010

CERADINI, Filippo;DI MICCO, Biagio;
2007-01-01

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.
2007
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 RID C-6238-2011 RID D-2250-2011 RID G-6301-2011 RID C-9722-2011 RID D-2615-2009 RID A-6640-2010. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 49(2), 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/11590/119509
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