期刊
PHYSICAL REVIEW D
卷 101, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.012012
关键词
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资金
- National Key Basic Research Program of China [2015CB856700]
- National Natural Science Foundation of China (NSFC) [11805037, 11625523, 11635010, 11735014, 11822506, 11835012]
- Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program
- NSFC [U1832121, U1632107, U1532257, U1532258, U1732263, U1832207]
- CAS [U1832121, U1632107, U1532257, U1532258, U1732263, U1832207]
- CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]
- 100 Talents Program of CAS
- Institute of Nuclear and Particle Physics (INPAC)
- Shanghai Key Laboratory for Particle Physics and Cosmology
- ERC [758462]
- German Research Foundation DFG [CRC 1044, FOR 2359]
- Istituto Nazionale di Fisica Nucleare, Italy
- Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]
- Ministry of Development of Turkey [DPT2006K-120470]
- National Science and Technology fund
- STFC (United Kingdom)
- Knut and Alice Wallenberg Foundation (Sweden) [2016.0157]
- Royal Society, UK [DH140054, DH160214]
- Swedish Research Council
- U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC0012069]
- University of Groningen (RuG)
- Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt
Using a data sample of (448.1 +/- 2.9) x 10( )(6)psi(3686) decays collected by the BESIII detector at the Beijing Electron Positron Collider (BEPCII), we observe the decays chi(cJ) -> phi phi eta (J = 0, 1, 2), where the chi(cJ) are produced via the radiative processes psi(3686) -> gamma chi(cJ) . The branching fractions are measured to be B(chi(c0) -> phi phi eta) = (8.41 +/- 0.74 +/- 0.62) x 10(-4), B(chi(c1) -> phi phi eta) = (2.96 +/- 0.43 +/- 0.22) x 10(-4), and B( chi(c2) -> phi phi eta) = (5.33 +/- 0.52 +/- 0.39) x 10(-4), where the first uncertainties are statistical, and the second are systematic. We also search for intermediate states in the phi phi or eta phi subsystems, but no significant structure is seen due to the limited statistics.
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