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Journal article

Improved measurement of the pseudoscalar decay constant f(D-s)

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

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Publisher copy:
10.1103/PhysRevD.58.032002

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Journal:
Physical Review D More from this journal
Volume:
58
Issue:
3
Pages:
0320021-03200210
Publication date:
1998-08-01
DOI:
EISSN:
1089-4918
ISSN:
0556-2821


Language:
English
Pubs id:
pubs:13719
UUID:
uuid:0dfc0dd6-5c1f-4668-b604-2d113a785c4e
Local pid:
pubs:13719
Source identifiers:
13719
Deposit date:
2012-12-19

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