Ehrlichmann,%20H.
E+ E- --> D/S+ X
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Production of D(s)+ mesons in B decays and determination of f(D(s))

The ARGUS collaboration Albrecht, H. ; Ehrlichmann, H. ; Hamacher, T. ; et al.
Z.Phys.C 54 (1992) 1-12, 1992.
Inspire Record 319829 DOI 10.17182/hepdata.14705

The production ofDS+ 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 inclusiveDS+ production in γ(4S)→B\(\bar B\) decays, all eight two-body decay modesB→DS(*)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(Ds+→φπ+)]1/2 is obtained for the weak decay constant fDS(*), averaged overDS+ andDS*+ mesons.

1 data table
Table 1

Inclusive D/S cross sections in continuum near to UPSI(4S).


Observation of the Decay $D(s$)+ $\to \eta^\prime \pi^+$

The ARGUS collaboration Albrecht, H. ; Ehrlichmann, H. ; Glaser, R. ; et al.
Phys.Lett.B 245 (1990) 315-320, 1990.
Inspire Record 295620 DOI 10.17182/hepdata.45150

Using the ARGUS detector at the e + e - storage ring DORIS II at DESY, we have observed the decay D s + → η'π + in two decay modes of the η'. We measure the ratio of branching ratios BR(D s + → η'π + )/BR(D s + → Øπ + ) to be 2.5±0.5±0.3.

1 data table
Table 1

The cross section times Br(D/S+ --> ETAPRIME PI+), but is not included the ETAPRIME branching ratio.