Upper Limit on the eta to gamma gamma gamma Branching Ratio with the KLOE Detector

Abstract

We have searched for the C-violating decay eta to gamma gamma gamma in a sample of ~ 18 million eta mesons produced in phi to eta gamma decays, collected with the KLOE detector at the Frascati phi-factory DAFNE. No signal is observed and we obtain the upper limit BR(eta to gamma gamma gamma) less equal than 1.6x10^(-5) at 90 % C.L.

8 pages, 5 figures Systematic study refined, some figures reordered

References in corpus (2)

• Measurement of $\sigma (e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\gamma )$ and extraction of $\sigma (e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-})$ below 1 {\rm GeV} with the KLOE detector
• Data handling, reconstruction, and simulation for the KLOE experiment

Cited by in corpus (9)

• Precision tests of fundamental physics with $\eta$ and ${\eta }^{\prime }$ mesons
• Prospects for e+e- physics at Frascati between the phi and the psi
• The Physics of DAFNE and KLOE
• Search for the $CP$-violating strong decays $\eta \to {\pi }^{+}{\pi }^{-}$ and ${\eta }^{\prime }(958)\to {\pi }^{+}{\pi }^{-}$
• KLOE results at the Frascati $\varphi$-factory DA$\Phi$NE
• Tests of the fundamental symmetries in eta meson decays
• Few Body Reserch - Summary
• Status of KLOE-2
• Study of $\eta$-meson Decays at KLOE/KLOE-2