Journal
PHYSICAL REVIEW D
Volume 93, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.93.112011
Keywords
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Funding
- National Key Basic Research Program of China [2015CB856700]
- National Natural Science Foundation of China (NSFC) [11235011, 11322544, 11335008, 11425524]
- Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program
- CAS Center for Excellence in Particle Physics (CCEPP)
- Collaborative Innovation Center for Particles and Interactions (CICPI)
- Joint Large-Scale Scientific Facility Fund of the NSFC
- Joint Large-Scale Scientific Facility Fund of the CAS [U1232201, U1332201, U1532257, U1532258]
- CAS [KJCX2-YW-N29, KJCX2-YW-N45]
- 100 Talents Program of CAS
- National 1000 Talents Program of China
- INPAC
- Shanghai Key Laboratory for Particle Physics and Cosmology
- Istituto Nazionale di Fisica Nucleare, Italy
- Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]
- Ministry of Development of Turkey [DPT2006K-120470]
- Swedish Resarch Council
- U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010504, DE-SC0012069, DESC0010118]
- U.S. National Science Foundation
- University of Groningen (RuG), Darmstadt
- Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt
- WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0]
- U.S. Department of Energy (DOE) [DE-SC0012069] Funding Source: U.S. Department of Energy (DOE)
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Based on a sample of (1310.6 +/- 10.5) x 10(6) J/psi events collected with the BESIII detector operating at the BEPCII storage ring, a partial wave analysis of the decay J/psi -> gamma phi phi is performed in order to study the intermediate states. Results of the partial wave analysis show that the structures are predominantly 0(-+) states. The existence of the eta(2225) is confirmed, and its resonance parameters are measured. Two additional pseudoscalar states, the eta(2100) with a mass of 2050(-24-26)(+30+75) MeV/c(2) and a width of 250(-30-164)(+36+181) MeV/c(2) and the X(2500) with a mass of 2470(-19-23)(+15+101) MeV/c(2) and a width of 230(-35-33)(+64+56) MeV/c(2), are observed. In addition to these three pseudoscalar states, the scalar state f(0)(2100), and three tensor states, the f(2)(2010), f(2)(2300) and f(2)(2340), are observed in the process J/psi -> gamma phi phi The product branching fractions B(J/psi -> gamma X) x B(X -> phi phi) are reported.
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