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Observation of e(+)e(-) -> eta h(c) at center-of-mass energies from 4.085 to 4.600 GeV
Inst High Energy Phys, Beijing 100049, Peoples R China.
GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia;GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany;Novosibirsk State Univ, Novosibirsk 630090, Russia.
Helmholtz Inst Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany.
Inst High Energy Phys, Beijing 100049, Peoples R China.
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2017 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 96, no 1, article id 012001Article in journal (Refereed) Published
Abstract [en]

We observe for the first time the process e(+) e(-) -> eta h(c) with data collected by the BESIII experiment. Significant signals are observed at the center-of-mass energy root s = 4.226 GeV, and the Born cross section is measured to be (9.5(-2.0)(+2.2)) pb. Evidence for eta h(c) is observed at root s = 4.358 GeV with a Born cross section of (10.0(-2.7)(+3.1)) pb, and upper limits on the production cross section at other center-of-mass energies between 4.085 and 4.600 GeV are determined.

Place, publisher, year, edition, pages
2017. Vol. 96, no 1, article id 012001
National Category
Subatomic Physics Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-359271DOI: 10.1103/PhysRevD.96.012001ISI: 000405187900003OAI: oai:DiVA.org:uu-359271DiVA, id: diva2:1245653
Available from: 2018-09-05 Created: 2018-09-05 Last updated: 2018-09-05Bibliographically approved

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Andersson, Walter IkegamiJohansson, TordKupsc, AndrzejLi, CuiPapenbrock, MichaelPettersson, JoachimSchönning, KarinWolke, Magnus
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Physical Review D: covering particles, fields, gravitation, and cosmology
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