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

Details Search for psi(2S) -> gamma eta_c(2S) via fully reconstructed eta_c(2S) decays Search for psi(2S) -> gamma eta_c(2S) via fully reconstructed eta_c(2S) decays

2009-10-07

arxiv.org/abs/0910.1324v2

Phys.Rev.D81:052002,2010

Physics

High Energy Physics

High Energy Physics - Experiment

21 pages, 7 figures, updated to published version (PRD 81, 052002 (2010))

Scientific paper

10.1103/PhysRevD.81.052002

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.

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