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Measurement of the pseudoscalar decay constant fDs using charm-tagged events in e+e- collisions at √s=10.58 GeV
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BABAR Collaboration (Including:
). (2007) Measurement of the pseudoscalar decay constant fDs using charm-tagged events in e+e- collisions at √s=10.58 GeV. Physical Review Letters, Vol.98 (No.14). Article: 141801. doi:10.1103/PhysRevLett.98.141801 ISSN 0031-9007.Research output not available from this repository.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.98.141801
Abstract
Using 230.2 fb(-1) of e(+)e(-) annihilation data collected with the BABAR detector at and near the peak of the Upsilon(4S) resonance, 489 +/- 55 events containing the pure leptonic decay D-s(+)->mu(+)nu(mu) have been isolated in charm-tagged events. The ratio of partial widths Gamma(D-s(+)->mu(+)nu(mu))/Gamma(D-s(+)->phi pi(+)) is measured to be 0.143 +/- 0.018 +/- 0.006 allowing a determination of the pseudoscalar decay constant f(Ds)=(283 +/- 17 +/- 7 +/- 14) MeV. The errors are statistical, systematic, and from the D-s(+)->phi pi(+) branching ratio, respectively.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | American Physical Society | ||||
ISSN: | 0031-9007 | ||||
Official Date: | 6 April 2007 | ||||
Dates: |
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Volume: | Vol.98 | ||||
Number: | No.14 | ||||
Number of Pages: | 7 | ||||
Page Range: | Article: 141801 | ||||
DOI: | 10.1103/PhysRevLett.98.141801 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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