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Precision measurement of the D*(0) decay branching fractions
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2015 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 91, no 3, 031101Article in journal (Refereed) Published
Abstract [en]

Using 482 pb(-1) of data taken at root s = 4.009 GeV, we measure the branching fractions of the decays of D*(0) into D-0 pi(0) and D-0 gamma to be B(D*(0) -> D-0 pi(0)) = (65.5 +/- 0.8 +/- 0.5)% and B(D*(0) -> D0 gamma) = (34.5 +/- 0.8 +/- 0.5)%, respectively, by assuming that the D*(0) decays only into these two modes. The ratio of the two branching fractions is B(D*(0) -> D-0 pi(0))/B(D*(0) -> D-0 gamma) = 1.90 +/- 0.07 +/- 0.05, which is independent of the assumption made above. The first uncertainties are statistical and the second ones systematic. The precision is improved by a factor of 3 compared to the present world average values.

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2015. Vol. 91, no 3, 031101
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URN: urn:nbn:se:uu:diva-246800DOI: 10.1103/PhysRevD.91.031101ISI: 000349437800001OAI: oai:DiVA.org:uu-246800DiVA: diva2:797159
Available from: 2015-03-23 Created: 2015-03-10 Last updated: 2017-12-04Bibliographically approved

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Johansson, TordKupsc, AndrzejSchönning, KarinWolke, Magnus

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