@article{8e95026431924bc1aa865a4170211c6f,
title = "Precision measurement of the branching fraction of J/ψ →k+K- via ψ (2S) →π+π-J/ψ",
abstract = "Using a sample of 448.1×106 ψ(2S) events collected with the BESIII detector, we perform a study of the decay J/ψ→K+K- via ψ(2S)→π+π-J/ψ. The branching fraction of J/ψ→K+K- is determined to be BK+K-=(3.072±0.023(stat)±0.050(syst))×10-4, which is consistent with previous measurements but with significantly improved precision.",
author = "M. Ablikim and Achasov, \{M. N.\} and P. Adlarson and Ai, \{X. C.\} and S. Kabana and \{The BESIII collaboration\}",
note = "Publisher Copyright: {\textcopyright} 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",
year = "2024",
month = aug,
day = "1",
doi = "10.1103/PhysRevD.110.032006",
language = "English",
volume = "110",
journal = "Physical Review D",
issn = "2470-0010",
number = "3",
}