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Search for C-parity violation in J/psi -> gamma gamma and gamma phi
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2014 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 90, no 9, 092002- p.Article in journal (Refereed) Published
Abstract [en]

Using 1.06 x 10(8) psi(3686) events recorded in e(+)e(-) collisions at root s = 3.686 GeV with the BESIII at the BEPCII collider, we present searches for C-parity violation in J/psi -> gamma gamma and gamma phi decays via psi(3686) -> J/psi pi(+)pi(-). No significant signals are observed in either channel. Upper limits on the branching fractions are set to be B(J/psi -> gamma gamma) < 2.7 x 10(-7) and B(J/psi -> gamma phi) < 1.4 x 10(-6) at the 90% confidence level. The former is one order of magnitude more stringent than the previous upper limit, and the latter represents the first limit on this decay channel.

Place, publisher, year, edition, pages
2014. Vol. 90, no 9, 092002- p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-240123DOI: 10.1103/PhysRevD.90.092002ISI: 000345591500001OAI: oai:DiVA.org:uu-240123DiVA: diva2:776915
Available from: 2015-01-08 Created: 2015-01-05 Last updated: 2017-12-05Bibliographically approved

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Johansson, TordKupsc, AndrzejSchönning, KarinWolke, Magnus

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