Search for ?(2S)???_{c}(2S) via fully reconstructed ?_{c}(2S) decays
Search for ?(2S)???_{c}(2S) via fully reconstructed ?_{c}(2S) decays
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DOI:
10.1103/physrevd.81.052002
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发表时间:
2009-10
影响因子:
5
通讯作者:
C. C. D. Cronin-Hennessy-C.;E. al.
中科院分区:
文献类型:
--
作者:
C. C. D. Cronin-Hennessy-C.;E. al.
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.