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Measurement of the absolute branching fraction of D0-->K-pi+.

著者 Aubert B , Bona M , Boutigny D , Karyotakis Y , Lees JP , Poireau V , Prudent X , Tisserand V , Zghiche A , Garra Tico J , Grauges E , Lopez L , Palano A , Eigen G , Ofte I , Stugu B , Sun L , Abrams GS , Battaglia M , Brown DN , Button-Shafer J , Cahn RN
Phys Rev Lett.2008 Feb 8 ; 100(5):051802.
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Laboratoire de Physique des Particules, IN2P3/CNRS et Université de Savoie, F-74941 Annecy-Le-Vieux, France.

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We measure the absolute branching fraction for D(0)-->K(-)pi(+) using partial reconstruction of B(0)-->D(*+)Xl(-)nu(l) decays, in which only the charged lepton and the pion from the decay D(*+)-->D(0)pi(+) are used. Based on a data sample of 230 x 10(6) BB pairs collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, we obtain B(D(0)-->K(-)pi(+)) = (4.007+/-0.037+/-0.072)%, where the first uncertainty is statistical and the second is systematic.
PMID: 18352359 [PubMed]
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