Journal
PHYSICAL REVIEW D
Volume 79, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.79.052002
Keywords
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Funding
- A. P. Sloan Foundation
- National Science Foundation
- U.S. Department of Energy
- Natural Sciences and Engineering Research Council of Canada
- U.K. Science and Technology Facilities Council
- Science and Technology Facilities Council [PPA/A/S/2003/00461/2, PP/F000650/1] Funding Source: researchfish
- STFC [PP/F000650/1] Funding Source: UKRI
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We have studied the leptonic decay D-s(+) -> tau(+) v(tau), via the decay channel tau(+) -> e(+) v(e) (v) over bar (tau), using a sample of tagged D-s(+) decays collected near the D-s*D-+/-(s)+/- peak production energy in e(+)e(-) collisions with the CLEO-c detector. We obtain B(D-s(+) -> tau(+) v(tau) ) = 5.30 +/- 0.47 +/- 0.22)% and determine the decay constant f(Ds) = (252.5 +/- 11.1 +/- 5.2) MeV, where the first uncertainties are statistical and the second are systematic.
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