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Measurement of the decay constant f(Ds+) using D(s+)--&l+ nu.
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2007 Aug 17;99(7):071802. Epub
2007 Aug 17.Measurement of the decay constant f(Ds+) using D(s+)--&l+ nu.1, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ; .1Syracuse University, Syracuse, New York 13244, USA.Erratum inAbstractWe measure the decay constant f(Ds+) using the D(s+)--&l+ nu channel, where the l+ designates either a mu+ or a tau+, when the tau+ --&pi+ nu. Using both measurements we find f(Ds+)=274+/-13+/-7 MeV. Combining with our previous determination of f(D+), we compute the ratio f(Ds+)/f(D+)=1.23+/-0.11+/-0.04. We compare with theoretical estimates.PMID:
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