期刊
PHYSICAL REVIEW D
卷 91, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.91.052017
关键词
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资金
- National Key Basic Research Program of China [2015CB856700]
- Joint Funds of the National Natural Science Foundation of China [11079008, 11179007, U1232201, U1332201]
- National Natural Science Foundation of China (NSFC) [10935007, 11121092, 11125525, 11235011, 11322544, 11335008, 11175189, 11375204]
- Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program
- CAS [KJCX2-YW-N29, KJCX2-YW-N45]
- 100 Talents Program of CAS
- INPAC and the Shanghai Key Laboratory for Particle Physics and Cosmology
- German Research Foundation DFG [Collaborative Research Center CRC-1044]
- Istituto Nazionale di Fisica Nucleare, Italy
- Ministry of Development of Turkey [DPT2006K-120470]
- Russian Foundation for Basic Research [14-07-91152]
- U.S. Department of Energy [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-FG02-94ER40823, DESC0010118]
- U.S. National Science Foundation
- University of Groningen (RuG)
- Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt
- WCU Program of the National Research Foundation of Korea [R322008-000-10155-0]
invariant mass spectrum of phi f(0)(980) with a statistical significance of greater than 10 sigma. The corresponding mass and width are determined to be M = 2200 +/- 6(stat) +/- 5(syst) MeV/c(2) and Gamma = 104 +/- 15(stat) +/- 15(syst) MeV, respectively, and the product branching fraction is measured to be B(J/psi ->eta Y(2175), Y(2175)->phi f(0)(980), f(0)(980)->pi(+)pi(-)) = (1.20 +/- 0.14(stat)+/- 0.37(syst))x10(-4). The results are consistent within errors with those of previous experiments. We also measure the branching fraction of J/psi ->phi f(1)(1285) with f(1)(1285)->eta pi(+)pi(-) and set upper limits on the branching fractions for J/psi ->phi eta(1405)/phi X(1835)/phi X(1870) with eta(1405)/X(1835)/X(1870)->eta pi(+)pi(-) at the 90% confidence level.
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