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Measurement of the e(+)e(-) -> eta J/psi cross section and search for e(+)e(-) -> pi(0)J/psi at center-of-mass energies between 3.810 and 4.600 GeV
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2015 (English)In: Physical Review D, ISSN 1550-7998, Vol. 91, no 11, 112005Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2015. Vol. 91, no 11, 112005
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-257648DOI: 10.1103/PhysRevD.91.112005ISI: 000355829200002OAI: oai:DiVA.org:uu-257648DiVA: diva2:840592
Available from: 2015-07-08 Created: 2015-07-06 Last updated: 2015-07-08Bibliographically approved

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Johansson, TordKupsc, AndrzejSchönning, KarinWolke, Magnus
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Nuclear Physics
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