Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-03-24
Physics
High Energy Physics
High Energy Physics - Experiment
11 pages, 8 figures, submitted to Physics Letters B
Scientific paper
We have searched for the decay phi -> K0 K0bar gamma, by detecting K_s pairs plus a photon and with the K_s-mesons decaying to pi^+ pi^-, in a sample of about 1.5x 10^9 phi-decays collected by the KLOE experiment at DAFNE. The reaction proceeds through the intermediate states f_0(980) gamma, a_0(980) gamma. We find five events with 3.2 events expected from background processes. We obtain the upper limit: BR (phi -> K0 K0bar gamma) < 1.9x10^-8 at 90% C.L. .
Ambrosino F.
Antonelli Alex
Antonelli Mario
Archilli Flavio
Beltrame Paolo
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