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Observation of eta' -> pi(+) pi(-) pi(+) pi(-) and eta' -> pi(+) pi(-) pi(0) pi(0)
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2014 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 112, no 25, 251801- p.Article in journal (Refereed) Published
Abstract [en]

Using a sample of 1.3 x 10(9) J/psi events collected with the BESIII detector, we report the first observation of eta' -> pi(+) pi(-) pi(+) pi(-) and eta' -> pi(+) pi(-) pi(0) pi(0). The measured branching fractions are B(eta' -> pi(+) pi(-) pi(+) pi(-)) = [8.53 +/- 0.69(stat.) +/- 0.64(syst.)] x 10(-5) and B(eta' -> pi(+) pi(-) pi(0) pi(0)) = [1.82 +/- 0.35(stat.) +/- 0.18(syst.)] x 10(-4), which are consistent with theoretical predictions based on a combination of chiral perturbation theory and vector-meson dominance.

Place, publisher, year, edition, pages
2014. Vol. 112, no 25, 251801- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-229743DOI: 10.1103/PhysRevLett.112.251801ISI: 000338644200006OAI: oai:DiVA.org:uu-229743DiVA: diva2:738311
Available from: 2014-08-18 Created: 2014-08-12 Last updated: 2017-12-05Bibliographically approved

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Johansson, TordKupsc, AndrzejSchönning, KarinWolke, Magnus

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