Samenvatting
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.
Originele taal-2 | English |
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Artikelnummer | 112005 |
Aantal pagina's | 12 |
Tijdschrift | Physical Review D |
Volume | 91 |
Nummer van het tijdschrift | 11 |
DOI's | |
Status | Published - 9-jun.-2015 |