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Measurement of semileptonic branching fractions of B mesons to narrow D-** states
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2005 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 95, no 17, 171803- p.Article in journal (Refereed) Published
Abstract [en]

Using the data accumulated in 2002-2004 with the D0 detector in proton-antiproton collisions at the Fermilab Tevatron collider with a center-of-mass energy of 1.96 TeV, the branching fractions of the decays B ->(D) over bar (0)(1)(2420)mu(+)nu(mu)X and B ->(D) over bar (*0)(2)(2460)mu(+)nu(mu)X and their ratio have been measured: B (b) over bar -> B)xB(B -> (D) over bar (0)(1)mu(+)nu(mu)X)xB((D) over bar (0)(1)-> D(*-)pi(+))=[0.087 +/- 0.007(stat)+/- 0.014(syst)]%; B((b) over bar -> B)xB(B ->(D) over bar (*0)(2)mu(+)nu(mu)X)xB((D) over bar (*0)(2)-> D(*-)pi(+))=[0.035 +/- 0.007(stat)+/- 0.008(syst)]% and [B(B ->(D) over bar (*0)(2)mu(+)nu(mu)X)xB((D) over bar (*0)(2)-> D(*-)pi(+))]/[B(B ->(D) over bar (0)(1)mu(+)nu(mu)X)xB((D) over bar (0)(1)-> D(*-)pi(+))]=0.39 +/- 0.09(stat)+/- 0.12(syst), where the charge conjugated states are always implied.

Place, publisher, year, edition, pages
2005. Vol. 95, no 17, 171803- p.
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-37876DOI: 10.1103/PhysRevLett.95.171803ISI: 000232724400022ScopusID: 2-s2.0-28844455715OAI: diva2:435407
Available from: 2011-08-18 Created: 2011-08-18 Last updated: 2012-02-02Bibliographically approved

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Clément, ChristopheGollub, NilsStrandberg, Jonas
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