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Measurements of the branching fractions of eta(c) -> K+ K- pi(0), (KSK +/-)-K-0 pi(-/+), 2(pi(+) pi(-) pi(0)), and p(p)over-bar
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.ORCID iD: 0000-0002-6945-716x
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.ORCID iD: 0000-0003-4937-2270
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Number of Authors: 4512019 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 100, no 1, article id 012003Article in journal (Refereed) Published
Abstract [en]

Using data samples collected with the BESIII detector at center-of-mass energies root s = 4.23, 4.26, 4.36, and 4.42 GeV, we measure the branching fractions of eta(c) -> K+ K- pi(0), (KSK +/-)-K-0 pi(-/+), 2(pi(+) pi(-) pi(0)), and p (p) over bar, via the process e(+) e(-) -> pi(+) pi(-) h(c), h(c) -> gamma eta(c). The corresponding results are (1.15 +/- 0.12 +/- 0.10)%, (2.60 +/- 0.21 +/- 0.20)%, (15.2 +/- 1.8 +/- 1.7)%, and (0.120 +/- 0.026 +/- 0.015)%, respectively. Here the first uncertainties are statistical, and the second ones systematic. Additionally, the charged track multiplicity of eta(c) decays is measured for the first time.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2019. Vol. 100, no 1, article id 012003
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Subatomic Physics
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URN: urn:nbn:se:uu:diva-391375DOI: 10.1103/PhysRevD.100.012003ISI: 000476694600001OAI: oai:DiVA.org:uu-391375DiVA, id: diva2:1354369
Funder
Swedish Research Council
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.100.012003

Available from: 2019-09-25 Created: 2019-09-25 Last updated: 2019-09-25Bibliographically approved

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