2010/03/18 by G. Rong, D. Zhang, Rong, G. +4
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.1003.3523
10 pages, 5 figures
arxiv created 2010/03/18 · openalex publication_date 2010/03/18 · arxiv updated 2010/03/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We review the progress on experimental studies of the non-D D decays of\nthe \ψ(3770) resonance. With the world average of the observed cross\nsections for D D production measured at 3.773 GeV by the MARK-I, MARK-II,\nBES and CLEO Collaborations, combined together with the cross section for\n\ψ(3770) production at its peak as well as initial state radiative\ncorrection factor, we find that the non-D D branching fraction of\n\ψ(3770) decays is B[\ψ(3770)\→ rm non-D D]=(19.8\± 1.8 \±\n5.6)%, which is consistent within error with B[\ψ(3770)\→ rm non-D nD]=(14.7\± 3.2)% measured previously by the BES Collaboration. In addition, a\nglobal amplitude analysis of the cross sections for e+e- \→ rm LH (LH=\nlight hadron) measured by the CLEO Collaboration shows that the light hadron\nbranching fraction of \ψ(3770) decays can be as large as about 11%. Combing\nthe totally measured hadronic and electromegnatic transition rate together with\nthe light hadron branching fraction in the decays of \ψ(3770) yields the\ntotal non-D D branching fraction in the decays of \ψ(3770) to be\nabout 13%.\n