@article{6f1aadb3ceac4a44bdfc9ba5b3e02984,
title = "Measurements of the absolute branching fractions for Ds+ →ηe+νe and Ds+ →η′e+νe",
abstract = "By analyzing 482 pb-1 of e+e- collision data collected at s=4.009 GeV with the BESIII detector at the BEPCII collider, we measure the absolute branching fractions for the semileptonic decays Ds+→ηe+νe and Ds+→η′e+νe to be B(Ds+→ηe+νe)=(2.30±0.31±0.08)\% and B(Ds+→η′e+νe)=(0.93±0.30±0.05)\%, respectively, and their ratio B(Ds+→η′e+νe)B(Ds+→ηe+νe)=0.40±0.14±0.02, where the first uncertainties are statistical and the second ones are systematic. The results are in good agreement with previous measurements within uncertainties; they can be used to determine the η-η′ mixing angle and improve upon the Ds+ semileptonic branching ratio precision.",
author = "\{(BESIII Collaboration)\} and M. Ablikim and Achasov, \{M. N.\} and S. Ahmed 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 N. Berger 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 J. Chai and Chang, \{J. F.\} and G. Chelkov and G. Chen and Chen, \{H. S.\} and Chen, \{J. C.\} and Chen, \{M. L.\} and Chen, \{P. L.\} 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.\}",
note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",
year = "2016",
month = dec,
day = "6",
doi = "10.1103/PhysRevD.94.112003",
language = "English",
volume = "94",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "11",
}