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Preprint
Report number hep-ex/0610019
Title Measurements of the absolute branching fractions for the semileptonic decays D0 -> K-mu+nu_mu and D0 -> pi-mu+nu_mu
Author(s) BES Collaboration  显示全部 157 名作者
Affiliation (M. Ablikim et al.)
Publication 2006
Imprint 8 Oct 2006
Number of pages 7
Subject category Particle Physics - Experiment
Abstract Based on the data sample of 33 pb1 collected at and around 3.773 GeV with the BESII detector at the BEPC collider, the absolute branching fractions for the semileptonic decays D0Kμ+νμ and D0πμ+νμ have been measured. In the system recoiling against 7584±198±341 singly tagged D¯0 mesons, 87.2±13.6 events for D0Kμ+νμ and 9.3±7.4 events for D0πμ+νμ are observed. These yield the absolute branching fractions to be BF(D0Kμ+νμ)=(3.55±0.56±0.59) and BF(D0πμ+νμ)=(0.38±0.30±0.10). The upper limit of the branching fraction for D0πμ+νμ is also set to be BF(D0πμ+νμ)<0.89 at 90% confidence level.
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 记录创建於2006-10-11,最後更新在2017-06-21


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