Measurement of the <i>e</i><SUP>+</SUP><i>e</i><SUP>-</SUP> → η<i>J</i>/ψ cross section and search for <i>e</i><SUP>+</SUP><i>e</i><SUP>-</SUP> → π<SUP>0</SUP><i>J</i>/ψ at center-of-mass energies between 3.810 and 4.600 GeV
PHYSICAL REVIEW D, cilt.91, sa.11, 2015 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 91 Sayı: 11
- Basım Tarihi: 2015
- Doi Numarası: 10.1103/physrevd.91.112005
- Dergi Adı: PHYSICAL REVIEW D
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Bursa Uludağ Üniversitesi Adresli: Hayır
Özet
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(-) -> eta J/psi and pi(0)J/psi 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(-) -> eta J/psi shows an enhancement around 4.2 GeV. The measurement is compatible with an earlier measurement by Belle.