Observation of a near-threshold enhancement in the ωφ mass spectrum from the doubly OZI-suppressed decay J/ψ→γωφ

被引：198
作者：
Ablikim, M
Bai, JZ
Ban, Y
Bian, JG
Cai, X
Chen, HF
Chen, HS
Chen, HX
Chen, JC
Chen, J
Chen, YB
Chi, SP
Chu, YP
Cui, XZ
Dai, YS
Diao, LY
Deng, ZY
Dong, QF
Du, SX
Fang, J
Fang, SS
Fu, CD
Gao, CS
Gao, YN
Gu, SD
Gu, YT
Guo, YN
Guo, YQ
Guo, ZJ
Harris, FA
He, KL
He, M
Heng, YK
Hu, HM
Hu, T
Huang, GS
Huang, XT
Ji, XB
Jiang, XS
Jiang, XY
Jiao, JB
Jin, DP
Jin, S
Jin, Y
Lai, YF
Li, G
Li, HB
Li, HH
Li, J
Li, RY
机构：
[1] Inst High Energy Phys, Beijing 100049, Peoples R China
[2] CCAST, Beijing 100080, Peoples R China
[3] Guangxi Normal Univ, Guilin 541004, Peoples R China
[4] Guangxi Univ, Nanning 530004, Peoples R China
[5] Henan Normal Univ, Xinxiang 453002, Peoples R China
[6] Huazhong Normal Univ, Wuhan 430079, Peoples R China
[7] Hunan Univ, Changsha 410082, Peoples R China
[8] Jinan Univ, Jinan 250022, Peoples R China
[9] Liaoning Univ, Shenyang 110036, Peoples R China
[10] Nanjing Normal Univ, Nanjing 210097, Peoples R China
[11] Nankai Univ, Tianjin 300071, Peoples R China
[12] Peking Univ, Beijing 100871, Peoples R China
[13] Shandong Univ, Jinan 250100, Peoples R China
[14] Sichuan Univ, Chengdu 610064, Peoples R China
[15] Tsinghua Univ, Beijing 100084, Peoples R China
[16] Univ Hawaii, Honolulu, HI 96822 USA
[17] Univ Sci & Technol China, Hefei 230026, Peoples R China
[18] Wuhan Univ, Wuhan 430072, Peoples R China
[19] Zhejiang Univ, Hangzhou 310028, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 16期
关键词：
D O I：
10.1103/PhysRevLett.96.162002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An enhancement near threshold is observed in the omega phi invariant mass spectrum from the doubly Okubo-Zweig-Iizuka-suppressed decays of J/psi ->gamma omega phi, based on a sample of 5.8x10(7) J/psi events collected with the BESII detector. A partial wave analysis shows that this enhancement favors J(P)=0(+), and its mass and width are M=1812(-26)(+19)(stat)+/- 18(syst) MeV/c(2) and Gamma=105 +/- 20(stat)+/- 28(syst) MeV/c(2). The product branching fraction is determined to be B(J/psi ->gamma X)B(X ->omega phi)=[2.61 +/- 0.27(stat)+/- 0.65(syst)]x10(-4).
引用
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页数：5
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