Recent Results on ψ(3770) Physics at BES-II

2008/10/20 by H. L. Ma, Ma, H. L.
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.0810.3541

To appear in the proceedings of 34$^{\rm th}$ International Conference on High Energy Physics, Philadelphia, 2008

arxiv created 2008/10/20 · openalex publication_date 2008/10/20 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28

Abstract

About 33, 6.5 and 1.0 pb^-1 of e⁺e^- annihilation data were, respectively, taken around the center-of-mass energies of √ s= 3.773 GeV, at √ s= 3.650 GeV and at √ s= 3.6648 GeV with the BES-II detector at the BEPC collider. By analyzing these data sets, we measure the branching fraction for ψ(3770)→ non-D D; observe an anomalous line shape of the cross section for e⁺e^-→ hadrons in the energy region from 3.650 to 3.872 GeV; and measure the line shapes of the D⁺D^-, D⁰ D⁰ and D D production and the ratios of the production rates of D⁺D^- and D⁰ D⁰ in e⁺e^- annihilation at ψ(3770) resonance. We also search for ψ(3770) decay into exclusive light hadron processes containing K⁰_S or π⁰π⁰ mesons in the final states.

Related

• Recent Results on ψ(3770) Physics at BES
• Recent Results on non-D D decays of ψ(3770) from BES
• Measurement of e⁺e^-→ϕη' cross sections at center-of-mass energies from 3.508 to 4.951 GeV and search for the decay ψ(3770)→ϕη'
• Observation of ψ(3770)→ηJ/ψ
• Anomalous Line-Shape of Cross Sections for e⁺e^- → \rm Hadrons in the Center-of-Mass Energy Region between 3.650 and 3.872 GeV