We have searched the mass region 3.2 to 5.9 GeV for evidence of narrow resonances in e+e-→hadrons. We find no evidence for any such resonances other than the ψ(3695) in this region with a sensitivity ranging from about 12 to 45% of the integrated cross section of the ψ(3695). The more stringent bounds apply to resonances of a few MeV width, while the looser bounds apply to resonances of up to 20 MeV width.
ASJC Scopus subject areas
- General Physics and Astronomy