@article{e7eb83d199f54badb04242a605caefd5,
title = "Measurement of the Ds+ →+ν branching fractions and the decay constant f Ds+",
abstract = "Using 482 pb-1 of e+e- collision data collected at a center-of-mass energy of s=4.009 GeV with the BESIII detector, we measure the branching fractions of the decays Ds+→μ+νμ and Ds+→τ+ντ. By constraining the ratio of decay rates of Ds+ to τ+ντ and to μ+νμ to the Standard Model prediction, the branching fractions are determined to be B(Ds+→μ+νμ)=(0.495±0.067±0.026)% and B(Ds+→τ+ντ)=(4.83±0.65±0.26)%. Using these branching fractions, we obtain a value for the decay constant fDs+ of (241.0±16.3±6.5) MeV, where the first error is statistical and the second systematic.",
author = "{(BESIII Collaboration)} and M. Ablikim and Achasov, {M. N.} and Ai, {X. C.} and O. Albayrak and M. Albrecht and Ambrose, {D. J.} and A. Amoroso and An, {F. F.} and Q. An and Bai, {J. Z.} and O. Bakina and {Baldini Ferroli}, R. and Y. Ban and Bennett, {D. W.} and Bennett, {J. V.} and M. Bertani and D. Bettoni and Bian, {J. M.} and F. Bianchi and E. Boger and I. Boyko and Briere, {R. A.} and H. Cai and X. Cai and O. Cakir and A. Calcaterra and Cao, {G. F.} and Cetin, {S. A.} and Chang, {J. F.} and G. Chelkov and G. Chen and Chen, {H. S.} and Chen, {H. Y.} and Chen, {J. C.} and Chen, {M. L.} and S. Chen and Chen, {S. J.} and X. Chen and Chen, {X. R.} and Chen, {Y. B.} and Cheng, {H. P.} and Chu, {X. K.} and G. Cibinetto and Dai, {H. L.} and Dai, {J. P.} and A. Dbeyssi and D. Dedovich and Deng, {Z. Y.} and A. Denig and I. Denysenko",
note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",
year = "2016",
month = oct,
day = "12",
doi = "10.1103/PhysRevD.94.072004",
language = "English",
volume = "94",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "7",
}