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Search for the weak decays J/psi -> D-s(()*()-) e(+)nu(e) + c.c.
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2014 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 90, no 11, 112014- p.Article in journal (Refereed) Published
Abstract [en]

Using a sample of 2.25 x 10(8) J/psi events collected with the BESIII detector at the BEPCII collider, we search for the J/psi semileptonic weak decay J/psi -> D-s(-) e(+)nu(e) +c.c. with a much higher sensitivity than previous searches. We also perform the first search for J/psi -> D-s(*-) e(+) nu(e) + c.c. No significant excess of a signal above background is observed in either channel. At the 90% confidence level, the upper limits are determined to be B(J/psi -> D-s(-) e(+) nu(e) + c.c.) < 1.3 x 10(-6) and B(J/psi -> D-s*(-) e(+) nu(e) + c.c.) < 1.8 x 10(-6), respectively. Both are consistent with Standard Model predictions.

Place, publisher, year, edition, pages
2014. Vol. 90, no 11, 112014- p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-245532DOI: 10.1103/PhysRevD.90.112014ISI: 000348360900003OAI: oai:DiVA.org:uu-245532DiVA: diva2:793920
Available from: 2015-03-09 Created: 2015-02-26 Last updated: 2017-12-04Bibliographically approved

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Johansson, TordKupsc, AndrzejSchönning, KarinWolke, Magnus

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