1999/10/14 by F. A. Harris, Harris, Frederick A.
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.hep-ex/9910027
openalex publication_date 1999/10/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper summarizes recent results obtained from the BES psi(2S) data, which with 3.8 M events, is the world's largest data set. Distributions for psi(2S) -> pi+ pi- J/psi are fit to the Novikov-Shifman model. Preliminary branching fractions are reported for psi(2S) -> gamma f2(1270) and gamma fJ(1710), as well as for decays into states containing an omega or phi. Finally recent measurements of the mass of the chic0 and etac are reported.