ISSN:
1434-6052
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
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.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01881703
Permalink