Observation of the phi to eta' gamma decay with four charged particles and photons in the final state

Details Observation of the phi to eta' gamma decay with four charged particles and photons in the final state Observation of the phi to eta' gamma decay with four charged particles and photons in the final state

2000-10-09

arxiv.org/abs/hep-ex/0010018v1

Phys.Lett.B494:26-32,2000

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages, 5 figures, 1 table

Scientific paper

10.1016/S0370-2693(00)01188-6

Using 11.6 1/pb of data collected in the energy range 0.864-1.06 GeV by CMD-2
at VEPP-2M, the rare decay mode phi to eta' gamma was observed via the decay
chain eta' to pi+pi- eta, eta to pi+pi-pi0 or eta to pi+pi- gamma. The
following branching ratio was obtained: Br(phi to eta' gamma) =
(4.9^{+2.2}_{-1.8} +- 0.6) \cdot 10^{-5}.

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