corner
corner

Phys. Rev. D 58, 032002 (1998) [10 pages]

Improved measurement of the pseudoscalar decay constant fDs

Download: PDF (272 kB) Buy this article Export: BibTeX or EndNote (RIS)

M. Chada et al. (CLEO Collaboration)
Show All Authors/Affiliations

Received 10 December 1997; published 22 June 1998

We present a new determination of fDs using 5 million e+e-cc̅ events obtained with the CLEO II detector. Our value is derived from our new measured ratio Γ(Ds+μ+ν)/Γ(Ds+φπ+)=0.173±0.023±0.035. Using B(Ds+φπ+)=(3.6±0.9)%, we extract fDs=(280±19±28±34)MeV. We compare this result with various model calculations.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.58.032002
DOI:
10.1103/PhysRevD.58.032002
PACS:
13.20.Fc