Abstract
Using about 3.9 million hadronic Z decays from e(+)e(-) collisions recorded by the OPAL detector at LEP at centre-of-mass energies,roots approximate to M-Z, the branching ratio for the decay D-s(-)--> tau (-)(v) over bar (tau) has been measured to be BR(D-s(-) --> tau (-)(v)over bar>) = (7.0 +/- 2.1(stat) +/- 2.0(syst))%. This result can be used to derive the decay constant of the D-s(-) meson: f(Ds) = (286 +/- 44(stat) +/- 41 (syst)) MeV. (C) 2001 Elsevier Science B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 236-248 |
Number of pages | 13 |
Journal | Physics Letters B |
Volume | 516 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - 20 Sept 2001 |