Study of the Decay phi --> eta pi0 gamma with the KLOE detector

Details Study of the Decay phi --> eta pi0 gamma with the KLOE detector Study of the Decay phi --> eta pi0 gamma with the KLOE detector

2002-04-10

arxiv.org/abs/hep-ex/0204012v2

Phys.Lett.B536:209-216,2002

Physics

High Energy Physics

High Energy Physics - Experiment

12 pages, 6 figures, submitted to Phys.Lett. B

Scientific paper

10.1016/S0370-2693(02)01821-X

In a sample of 5.3x10^7 phi-decays observed with the KLOE detector at the Frascati phi-factory Dafne we find 605 eta pi0 gamma events with eta --> gamma\gamma and 197 eta pi0 gamma events with eta --> pi+ pi- pi0. The decay phi --> eta pi0 gamma is dominated by the process phi --> a0 gamma. From a fit to the eta pi0 mass spectrum we find BR(phi --> ao(980) gamma)= (7.4 +- 0.7)x10^-5.

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