We report the results on the radiative decays phi --> eta'gamma, phi --> pi(0)pi(0)gamma and phi --> etapi(0)gamma obtained with the KLOE detector at the DAPhiNE phi-factory, using a sample of similar to 16 pb(-1). The value of the branching ratio for the phi --> eta'gamma decay is related to the s (s) over bar and gluon content of the eta'. A fit to the two-pseudoscalar invariant mass for the pi(0)pi(0)gamma and etapi(0)gamma final states gives the contribution of the direct terms phi --> f(0)gamma, phi --> sigmagamma and phi --> a(0)gamma, allowing us to investigate the nature of these light scalar mesons. RI Gauzzi, Paolo/D-2615-2009; valente, paolo/A-6640-2010; ANTONELLI, ANTONELLA/C-6238-2011; Di Domenico, Antonio/G-6301-2011; De Lucia, Erika/D-2250-2011; branchini, paolo/A-4857-2011; Murtas, Fabrizio/B-5729-2012
DI MICCO, B. (2003). KLOE results on phi radiative decays. NUCLEAR PHYSICS. A, 721, 801C-804C [10.1016/S0375-9474(03)01185-0].
KLOE results on phi radiative decays
DI MICCO, Biagio
2003-01-01
Abstract
We report the results on the radiative decays phi --> eta'gamma, phi --> pi(0)pi(0)gamma and phi --> etapi(0)gamma obtained with the KLOE detector at the DAPhiNE phi-factory, using a sample of similar to 16 pb(-1). The value of the branching ratio for the phi --> eta'gamma decay is related to the s (s) over bar and gluon content of the eta'. A fit to the two-pseudoscalar invariant mass for the pi(0)pi(0)gamma and etapi(0)gamma final states gives the contribution of the direct terms phi --> f(0)gamma, phi --> sigmagamma and phi --> a(0)gamma, allowing us to investigate the nature of these light scalar mesons. RI Gauzzi, Paolo/D-2615-2009; valente, paolo/A-6640-2010; ANTONELLI, ANTONELLA/C-6238-2011; Di Domenico, Antonio/G-6301-2011; De Lucia, Erika/D-2250-2011; branchini, paolo/A-4857-2011; Murtas, Fabrizio/B-5729-2012I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
