Search for psi(2S) ---> gamma eta(c) (2S) via fully reconstructed eta(c)(2S) decays

Collaboration
Oct, 2009

Citations per year

2010201320162019202202468
Abstract: (arXiv)
We report a search for the decay psi(2S) -> gamma eta_c(2S) in a sample of 25.9 million psi(2S) events collected with the CLEO-c detector. No signals are observed in any of the 11 exclusive eta_c(2S) decay modes studied, or in their sum. Product branching fraction upper limits are determined as a function of Gamma[eta_c(2S)] for the 11 individual modes.
Note:
  • 21 pages, 7 figures, updated to published version (PRD 81, 052002 (2010))
  • 13.20.Gd
  • 13.25.Gv
  • 13.40.Hq
  • electron positron: annihilation
  • psi(3685): radiative decay
  • branching ratio: upper limit
  • eta/c(3590): branching ratio
  • eta/c(3590): decay modes
  • CLEO
  • Cornell CESR Stor