Measurement of the e+e- →ηJ /ψ cross section and search for e+e- →π0J /ψ at center-of-mass energies between 3.810 and 4.600 GeV
Physical Review D - Particles, Fields, Gravitation and Cosmology, vol.91, no.11, 2015 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 91 Issue: 11
- Publication Date: 2015
- Doi Number: 10.1103/physrevd.91.112005
- Journal Name: Physical Review D - Particles, Fields, Gravitation and Cosmology
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Open Archive Collection: AVESIS Open Access Collection
- Ankara University Affiliated: Yes
Abstract
Using data samples collected with the BESIII detector operating at the BEPCII collider at 17 center-of-mass energies from 3.810 to 4.600 GeV, we perform a study of e+e-→ηJ/ψ and π0J/ψ. The Born cross sections of these two processes are measured at each center-of-mass energy. The measured energy-dependent Born cross section for e+e-→ηJ/ψ shows an enhancement around 4.2 GeV. The measurement is compatible with an earlier measurement by Belle.