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Production ofD + S mesons inB decays and determination of\(f_{D_S } \)

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Zeitschrift für Physik C Particles and Fields

Abstract

The production ofD +S mesons inB meson decays, and inq \(\bar q\) continuum events, has been studied with the ARGUS detector at thee + e storage ring DORIS II. In addition to the measurement of inclusiveD + S production in γ(4S)→B \(\bar B\) decays, all eight two-body decay modesB→D (*)S D (*) have been measured with branching ratios between 1% and 3%. By comparing our inclusive and exclusive results to predictions of heavy quark effective theory, a value of (267±28) MeV × [2.7%/BR(D + s →φπ+)]1/2 is obtained for the weak decay constant fD (*) S , averaged overD + S andD *+ S mesons.

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Supported by the German Bundesministerium für Forschung und Technologic, under contract number 054DO51P

Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054ER112P

Supported by the German Bundesministerium für Forschung und Technologie, under contract number 055 HD21P

Supported in part by the Walter C. Sumner Foundation

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 the Department of Science and Technology of the Republic of Slovenia and the Internationales Büro KfA, Jülich

Supported by the Swedish Research Council

Deceased

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. Production ofD + S mesons inB decays and determination of\(f_{D_S } \) . Z. Phys. C - Particles and Fields 54, 1–11 (1992). https://doi.org/10.1007/BF01881703

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  • DOI: https://doi.org/10.1007/BF01881703

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