Measurement of the branching fraction for ψ(3770)→γχ0

2015/11/30 by BESIII Collaboration, М. Н. Ачасов, M. Ablikim +431 · 1 citation
Chemistry · Physics and Astronomy · #Branching (polymer chemistry) #Branching fraction #Chemistry #Collider #Data mining #Detector #Electron–positron annihilation #Hadron #High-Energy Particle Collisions Research #Measure (data warehouse) #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1016/j.physletb.2015.11.074

published as Physics Letters B 753 (2016) pp. 103-109 · 11 pages, 2 figures

openalex publication_date 2015/12/11 · arxiv created 2015/12/12 · arxiv updated 2015/12/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

By analyzing a data set of 2.92 fb − 1 of e + e − collision data taken at s = 3.773 GeV and 106.41 × 10 6 ψ ( 3686 ) decays taken at s = 3.686 GeV with the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for ψ ( 3770 ) → γ χ c 0 to be B ( ψ ( 3770 ) → γ χ c 0 ) = ( 6.88 ± 0.28 ± 0.67 ) × 10 − 3 and Γ [ ψ ( 3770 ) → γ χ c 0 ] = ( 187 ± 8 ± 19 ) keV , respectively. These are the most precise measurements to date.

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
• Review of Particle Physics
• Charmonium levels near threshold and the narrow stateX(3872)→π+π−J/ψ
• Quarkonia and their transitions
• ψ″ Decays to charmless final states
• The precision Monte Carlo event generator for two-fermion final states in collisions
• 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¯
• Charmonium
• Big-Bang Nucleosynthesis

Cited by

• Charmonium spectrum and electromagnetic transitions with higher multipole contributions