Measurements of the observed cross sections for e+e−→ exclusive light hadrons containing π0π0 at s=3.773, 3.650 and 3.6648 GeV

2008/10/31 by M. Ablikim, BES Collaboration, J.Z. Bai +98
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1016/j.physletb.2008.10.051

published as Phys.Lett.B670:184-189,2008 · 7 pages, 2 figures

arxiv created 2008/10/31 · openalex publication_date 2008/10/31 · arxiv updated 2012/08/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

By analyzing the data sets of 17.3, 6.5 and 1.0 pb^-1 taken, respectively, at √ s= 3.773, 3.650 and 3.6648 GeV with the BES-II detector at the BEPC collider, we measure the observed cross sections for e⁺e^-→ π⁺π^-π⁰π⁰, K⁺K^-π⁰π⁰, 2(π⁺π^-π⁰), K⁺K^-π⁺π^-π⁰π⁰ and 3(π⁺π^-)π⁰π⁰ at the three energy points. Based on these cross sections we set the upper limits on the observed cross sections and the branching fractions for ψ(3770) decay into these final states at 90% C.L..

Citations

• Precision measurements of the mass, the widths of ψ(3770) resonance and the cross section σ[e+e−→ψ(3770)] at Ecm=3.7724 GeV
• Measurements of the observed cross sections for exclusive light hadron production in e+e− annihilation at s=3.773 and 3.650 GeV
• Experimental studies of the π+π-π+π-π0, K+K-π+π-π0 and ppπ+π-π0 final states produced in e+e- annihilation at √(s)= 3.773 and 3.650 GeV
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Measurements of the cross sections for e+e−→hadrons at 3.650, 3.6648, 3.773 GeV and the branching fraction for ψ(3770)→non-DD¯