Inclusive production ofD 0 ,D + andD * (2010)+ mesons inB decays and nonresonante + e − annihilation at 10.6 GeV
Zeitschrift für Physik C Particles and Fields(1991)
摘要
Using the ARGUS detector at thee+e− storage ring DORIS II at DESY, we have measured the inclusive production ofD0,D+ andD*(2010)+ mesons inB decays and in nonresonante+e− annihilation around 10.6 GeV. The inclusive branching ratios forB decays toD0,D+ andD*+ mesons are found to be (52.2±8.2±3.5)%, (27.2±6.3±3.5)% and (34.8±6.0±3.5)% respectively. Thus,D0 andD+ production account for about 70% of the charm produced inB decays, neglectingb→u contributions to the total width. The production cross sections and momentum spectra for continuume+e− annihilation are also presented.
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关键词
Field Theory, Elementary Particle, Quantum Field Theory, Production Cross, Production Cross Section
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