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

Abstract

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}.

arXiv comment11 pages, 5 figures, 1 table

References in corpus (4)

• Radiative Decays, Nonet Symmetry and SU(3) Breaking
• Cross section of the reaction $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-}$ below 1 GeV at CMD-2
• Observation of the phi to pi+pi-pi+pi- Decay
• New measurement of the rare decay $\varphi \to {\eta }^{\prime }\gamma$ with CMD-2

Cited by in corpus (5)

• The anomalous magnetic moment of the muon in the Standard Model
• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Measurement of the pseudoscalar mixing angle and ${\eta }^{\prime }$ gluonium content with KLOE detector
• Measurement of Gamma(phi -> eta' gamma)/Gamma(phi -> eta gamma) and the pseudoscalar mixing angle
• CMD-2 and SND results on the rho, omega and phi