标题:Observation and spin-parity determination of the X(1835) in J/ψ → γK0 SK0 Sη
作者:Ablikim, M. ;Achasov, M.N. ;Ai, X.C. ;Albayrak, O. ;Albrecht, M. ;Ambrose, D.J. ;Amoroso, A. ;An, F.F. ;An, Q. ;Bai, J.Z. ;Baldini Ferroli, R. ;Ban, Y 更多
作者机构:[] Uludag University, Bursa; 16059, Turkey;[] University of Ferrara, Ferrara; I-44122, Italy;[Harris, F.A. ;Kornicer, M. ] University of Hawaii, Honol 更多
来源:Physical Review Letters
出版年:2015
卷:115
期:9
页码:091803-1-091803-7
DOI:10.1103/PhysRevLett.115.091803
摘要:We report an observation of the process J/ψ → γX(1835) → γK0 SK0 Sη at low K0 SK0 S mass with a statistical significance larger than 12.9σ using a data sample of 1.31 × 109 J/ψ events collected with the BESIII detector. In this region of phase space the K0 SK0 S system is dominantly produced through the f0(980). By performing a partial wave analysis, we determine the spin parity of the X(1835) to be JPC = 0−+. The mass and width of the observed X(1835) are 1844 ± 9(stat)+16 −25 (syst) MeV/c2 and 192+20 −17 (stat)+62 −43 (syst) MeV, respectively, which are consistent with the results obtained by BESIII in the channel J/ψ → γπ+π−η'. © 2015 American Physical Society.
收录类别:EI;SCOPUS
Scopus被引频次:25
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940675898&doi=10.1103%2fPhysRevLett.115.091803&partnerID=40&md5=9215b0045c5a4cd229e8a6acbd9a93f0
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