@article{ea7719a5d25944afa6b65aff46092b1a,
title = "Observation of the J /ψ and ψ (3686) decays into η ς+ ς ¯ -",
abstract = "The decays J/ψ→ης+ς¯- and ψ(3686)→ης+ς¯- are observed for the first time, using (10087±44)×106 J/ψ and (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector at the BEPCII collider. We determine the branching fractions of these two decays to be B(J/ψ→ης+ς¯-)=(6.34±0.21±0.37)×10-5 and B(ψ(3686)→ης+ς¯-)=(9.59±2.37±0.61)×10-6, where the first uncertainties are statistical and the second are systematic. The ratio of these two branching fractions is determined to be B(ψ(3686)→ης+ς¯-)B(J/ψ→ης+ς¯-)=(15.1±3.8)\%, which is in agreement with the {"}12\% rule.{"}",
author = "M. Ablikim and Achasov, \{M. N.\} and P. Adlarson and M. Albrecht and S. Kabana and \{The BESIII collaboration\}",
note = "Publisher Copyright: {\textcopyright} 2022 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 = "2022",
month = dec,
day = "1",
doi = "10.1103/PhysRevD.106.112007",
language = "English",
volume = "106",
journal = "Physical Review D",
issn = "2470-0010",
number = "11",
}