Cross sections for e+e-→hadrons, e+e-, and μ+μ- near 3684 MeV are presented. The ψ(3684) resonance is established as having the assignment JPC=1 - . The mass is 3684 ± 5 MeV. The partial width for decay to electrons is Γe=2.1±0.3 keV and the total width is Γ=228±56 keV.
ASJC Scopus subject areas
- Physics and Astronomy(all)