@article{43a27075ec7341068445b651eda3e261,
title = "Improved measurements of branching fractions for ηc →φφ and ωφ",
abstract = "Using (223.7±1.4)×106 J/ψ events accumulated with the BESIII detector, we study ηc decays to φφ and ωφ final states. The branching fraction of ηc→φφ is measured to be Br(ηc→φφ)=(2.5±0.3-0.7+0.3±0.6)×10-3, where the first uncertainty is statistical, the second is systematic, and the third is from the uncertainty of Br(J/ψ→γηc). No significant signal for the double Okubo-Zweig-Iizuka suppressed decay of ηc→ωφ is observed, and the upper limit on the branching fraction is determined to be Br(ηc→ωφ)<2.5×10-4 at the 90% confidence level.",
keywords = "HELICITY-COUPLING AMPLITUDES, C-DECAYS, MESONS, SPIN",
author = "{The BELLE 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 {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 Muchnoi, {N. Yu} and Nikolaev, {I. B.}",
year = "2017",
month = may,
day = "1",
doi = "10.1103/PhysRevD.95.092004",
language = "English",
volume = "95",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "AMER PHYSICAL SOC",
number = "9",
}