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Observation of pseudoscalar and tensor resonances in J/psi -> gamma phi phi
Inst High Energy Phys, Beijing 100049, Peoples R China..
GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia.;Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia. Istanbul Arel Univ, TR-34295 Istanbul, Turkey..
Inst High Energy Phys, Beijing 100049, Peoples R China..
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA..
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2016 (English)In: PHYSICAL REVIEW D, ISSN 2470-0010, Vol. 93, no 11, 112011Article in journal (Refereed) PublishedText
Abstract [en]

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.

Place, publisher, year, edition, pages
2016. Vol. 93, no 11, 112011
National Category
Subatomic Physics
URN: urn:nbn:se:uu:diva-299718DOI: 10.1103/PhysRevD.93.112011ISI: 000378203800003OAI: oai:DiVA.org:uu-299718DiVA: diva2:950012
Swedish Research Council
Available from: 2016-07-26 Created: 2016-07-26 Last updated: 2016-07-26Bibliographically approved

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Johansson, TordKupsc, AndrzejLi, CuiPettersson, JoachimSchönning, KarinWolke, Magnus
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