Resonances in J/ψ → φπ+π- and φK+K-

被引：287
作者：
Ablikim, M [1 ]
Bai, JZ
Ban, Y
Bian, JG
Bugg, D
Cai, X
Chang, JF
Chen, HF
Chen, HS
Chen, HX
Chen, JC
Chen, J
Chen, J
Chen, ML
Chen, YB
Chi, SP
Chu, YP
Cui, XZ
Dai, HL
Dai, YS
Deng, ZY
Dong, LY
Dong, QF
Du, SX
Du, ZZ
Fang, J
Fang, SS
Fu, CD
Fu, HY
Gao, CS
Gao, YN
Gong, MY
Gong, WX
Gu, SD
Guo, Y
Guo, YQ
Guo, ZJ
Harris, FA
He, KL
He, M
He, X
Heng, YK
Hu, HM
Hu, T
Huang, GS
Huang, XP
Huang, XT
Ji, XB
Jiang, CH
Jiang, XS
机构：
[1] Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Chinese Ctr Adv Sci & Technol, Beijing 100080, Peoples R China
[3] Guangxi Normal Univ, Guilin 541004, Peoples R China
[4] Henan Normal Univ, Xinxiang 453002, Peoples R China
[5] Huazhong Normal Univ, Wuhan 430079, Peoples R China
[6] Hunan Univ, Changsha 410082, Peoples R China
[7] Liaoning Univ, Shenyang 110036, Peoples R China
[8] Nanjing Normal Univ, Nanjing 210097, Peoples R China
[9] Nankai Univ, Tianjin 300071, Peoples R China
[10] Peking Univ, Beijing 100871, Peoples R China
[11] Shandong Univ, Jinan 250100, Peoples R China
[12] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China
[13] Sichuan Univ, Chengdu 610064, Peoples R China
[14] Tsinghua Univ, Beijing 100084, Peoples R China
[15] Univ Hawaii, Honolulu, HI 96822 USA
[16] Univ Sci & Technol China, Hefei 230026, Peoples R China
[17] Wuhan Univ, Wuhan 430072, Peoples R China
[18] Zhejiang Univ, Hangzhou 310028, Peoples R China
[19] Queen Mary Univ London, London E1 4NS, England
来源：
PHYSICS LETTERS B | 2005年 / 607卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/j.physletb.2004.12.041
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A partial wave analysis is presented of J/psi --> phipi(+)pi(-) and phiK(+)K(-) from a sample of 58M J/psi events in the BES II detector. The f(0)(980) is observed clearly in both sets of data, and parameters of the Flatte formula are determined accurately: M = 965 +/- 8(stat) +/- 6(syst) MeV/c(2), g(1) = 165 +/- 10 +/- 15 MeV/c(2), g(2)/g(1) = 4.21 +/- 0.25 +/- 0.21. The phipipi data also exhibit a strong pipi peak centred at M = 1335 MeV/c(2). It may be fitted with f(2)(1270) and a dominant 0(+) signal made from f(0)(1370) interfering with a smaller f(0)(1500) component. There is evidence that the f(0)(1370) signal is resonant, from interference with f(2)(1270). There is also a state in pipi with M = 1790(-30)(+40) MeV/c(2) and Gamma = 270(-30)(+60) MeV/c(2); spin 0 is preferred over spin 2. This state, f(0)(1790), is distinct from f(0)(1710). The phiK (K) over bar data contain a strong peak due to f(2)'(1525). A shoulder on its upper side may be fitted by interference between f(0)(1500) and f(0)(1710). (C) 2004 Elsevier B.V. All rights reserved.
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页码：243 / 253
页数：11
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