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Measurement of the decay constant f(Ds+) using D(s+)-->l+ nu.
- Source :
-
Physical review letters [Phys Rev Lett] 2007 Aug 17; Vol. 99 (7), pp. 071802. Date of Electronic Publication: 2007 Aug 17. - Publication Year :
- 2007
-
Abstract
- We 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.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 99
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 17930886
- Full Text :
- https://doi.org/10.1103/PhysRevLett.99.071802