Abstract: (Elsevier)
Signal of the rare radiative decay φ → ηπ 0 γ was observed in the SND experiment at VEPP-2M electron-positron collider. The result is based on the analysis of data, corresponding to a total integrated luminosity of 4 pb −1 , or 8·10 6 φ -mesons produced. The measured branching ratio of φ → ηπ 0 γ decay is equal to (0.83±0.23)·10 −4 .
  • talk: Vancouver 1998/07/23
  • electron positron: colliding beams
  • electron positron: annihilation
  • Phi(1020): electroproduction
  • Phi(1020): radiative decay
  • Phi(1020): branching ratio
  • upper limit
  • eta: radiative decay
  • pi0: radiative decay
  • mass spectrum: (eta pi0)