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(-) -> 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.
Original language | English |
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Article number | 112005 |
Number of pages | 12 |
Journal | Physical Review D |
Volume | 91 |
Issue number | 11 |
DOIs | |
Publication status | Published - 9-Jun-2015 |
Keywords
- Y(4260)
- DECAY
- STATE