The scalar mesons of mass below 1 GeV have been studied with the KLOE detector at the Frascati -factory DANE, through the radiative decays of the (1020). The f 0(980) has been studied in the decays ! 0 0 and ! +− looking also for a possible signal of the (600), while for the a0(980) the ! 0 decay has been exploited. The branching ratios of these decays have been measured, and the relevant parameters of the scalar mesons have been extracted from the fit of the invariant masses of the pseudoscalar mesons in the final states. Furthermore an upper limit for the branching ratio of !(a0/ f0)!K0¯K 0 has been obtained.
Light scalar mesons at KLOE / Gauzzi, Paolo. - 1030:(2008), pp. 84-93. (Intervento presentato al convegno SCADRON70: WORKSHOP ON SCALAR MESONS AND RELATED TOPICS - HONORING MICHAEL D. SCADRON'S 70TH BIRT tenutosi a Lisbon; Portugal) [10.1063/1.2973556].
Light scalar mesons at KLOE
GAUZZI, Paolo
2008
Abstract
The scalar mesons of mass below 1 GeV have been studied with the KLOE detector at the Frascati -factory DANE, through the radiative decays of the (1020). The f 0(980) has been studied in the decays ! 0 0 and ! +− looking also for a possible signal of the (600), while for the a0(980) the ! 0 decay has been exploited. The branching ratios of these decays have been measured, and the relevant parameters of the scalar mesons have been extracted from the fit of the invariant masses of the pseudoscalar mesons in the final states. Furthermore an upper limit for the branching ratio of !(a0/ f0)!K0¯K 0 has been obtained.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.