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Measurement of the Semileptonic Branching Ratio of Bs(0) to an Orbitally Excited D-s** State: Br(Bs(0) -> Ds1(-)(2536)mu(+)nu X)
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2009 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 102, no 5, 051801- p.Article in journal (Refereed) Published
Abstract [en]

In a data sample of approximately 1.3 fb(-1) collected with the D0 detector between 2002 and 2006, the orbitally excited charm state D-s1(+/-)(2536) has been observed with a measured mass of 2535.7 +/- 0.6(stat) +/- 0.5(syst) MeV/c(2) via the decay mode B-s(0) -> D-s1(-)(2536)mu(+)nu X-mu. A first measurement is made of the branching ratio product Br((b) over bar -> D-s1(-)(2536)mu(+)nu X-mu) x Br(D-s1(-) -> D*K--(S)0). Assuming that D-s1(-)(2536) production in semileptonic decay is entirely from B-s(0), an extraction of the semileptonic branching ratio Br(B-s(0) -> D-s1(-)(2536)mu(+)nu X-mu) is made.

Place, publisher, year, edition, pages
2009. Vol. 102, no 5, 051801- p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-139983DOI: 10.1103/PhysRevLett.102.051801ISI: 000263166400015OAI: oai:DiVA.org:uu-139983DiVA: diva2:382660
Available from: 2011-01-03 Created: 2011-01-03 Last updated: 2011-01-03Bibliographically approved

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