2004/05/13 by Changzheng Yuan, Yuan, Changzheng
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0405021
4 pages, 1 figure, talk at 39th Rencontres de Moriond, QCD session
arxiv created 2004/05/13 · arxiv updated 2009/12/01
Recent results on charmonia decays at BES/BEPC are reported, including the observation of psi'-->KS KL, psi'--> Vector + Tensor for the measurement of the relative phase between the strong and electromagnetic decays of psi' and a test of the pQCD ``12% rule'' between psi' and J/psi decays; the study of psi'--> gamma gamma J/psi for the determination of psi'--> pi0 J/psi, eta J/psi, gamma chic1 and gamma chic2 decay branching fractions; the test of the color-octet mechanism via chicJ--> p p and chicJ--> ΛΛ; and a search for the CP violating process psi' and J/psi--> KS KS.