Measurement of the decay constant fDs+ using Ds+→l+ν
- M. Artuso,
- S. Blusk,
- J. Butt,
- S. Khalil,
- J. Li,
- N. Menaa
- Syracuse University,
- Wayne State University,
- Carleton University,
- Carnegie Mellon University,
- The University of Chicago,
- Cornell University
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Article
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64
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5.04
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115
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96
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5
Abstract
We measure the decay constant fDs+ using the Ds+→+ν channel, where the + designates either a μ+ or a τ+, when the τ+→π+ν ̄. Using both measurements we find fDs+=274±13±7MeV. Combining with our previous determination of fD+, we compute the ratio fDs+/fD+=1.23±0.11±0.04. We compare with theoretical estimates.
Publication Information
Output type
Research Output:
Contribution to journal
Article
Peer-reviewOriginal language
EnglishArticle number
071802Journal (Volume, Issue Number)
Physical Review Letters (Volume 99, Issue 7)Publication milestones
- Published - 17/08/2007
Publication status
Published - 17/08/2007
ISSN
0031-9007Publication IDs
- Scopus: 34548105168
- WOS: 000248866900012