Abstract
Using the ARGUS detector at thee + e − storage ring DORIS II at DESY, we have measured the inclusive production ofD 0,D + andD *(2010)+ mesons inB decays and in nonresonante + e − annihilation around 10.6 GeV. The inclusive branching ratios forB decays toD 0,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,D 0 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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Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054DO51P
Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054ER 12P
Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054HD 24P
Supported by the Natural Sciences and Engineering Research Council, Canada
Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054KA 17P
Supported by Raziskovalna skupnost Slovenije and the Internationales Büro KfA, Jülich
Supported by the Swedish Research Council
Supported by the U.S. Department of Energy, under contract DE-AS09-80ER 10690
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ARGUS Collaboration., Albrecht, H., Ehrlichmann, H. et al. Inclusive production ofD 0,D + andD *(2010)+ mesons inB decays and nonresonante + e − annihilation at 10.6 GeV. Z. Phys. C - Particles and Fields 52, 353–360 (1991). https://doi.org/10.1007/BF01559430
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DOI: https://doi.org/10.1007/BF01559430