Determining the upper limit of Γee for the Y(4260)

2006/03/31 by X. H. Mo, Gang Li, G. Li +8 · 54 citations
Mathematics · Physics and Astronomy · #Algorithm #High-Energy Particle Collisions Research #Limit (mathematics) #Mathematical analysis #Mathematics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1016/j.physletb.2006.07.060

published in Physics Letters B 640(4), 182-187 (Elsevier BV) · 8 pages, 4 figures

arxiv created 2006/07/31 · openalex publication_date 2006/08/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

By fitting the R values between 3.7 and 5.0 GeV measured by the BES Collaboration, the upper limit of the electron width of the newly discovered resonance Y(4260) is determined to be 580eV/c2 at 90% C.L. Together with the BaBar measurement on Γee⋅B(Y(4260)→π+π−J/ψ), this implies a large decay width of Y(4260)→π+π−J/ψ final states.

Citations

• The production and decay of hybrid mesons by flux-tube breaking
• The possible interpretations of Y(4260)
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• A new hadron spectroscopy
• Measurement of the Near-Thresholde+e−→D(*)±D(*)∓Cross Section using Initial-State Radiation
• On leptonic width of X(4260)