Authors
M Ablikim, JZ Bai, Y Ban, JG Bian, DV Bugg, X Cai, JF Chang, HF Chen, HS Chen, HX Chen, JC Chen, Jin Chen, Jun Chen, ML Chen, YB Chen, SP Chi, YP Chu, XZ Cui, HL Dai, YS Dai, ZY Deng, LY Dong, QF Dong, SX Du, ZZ Du, J Fang, SS Fang, CD Fu, HY Fu, CS Gao, YN Gao, MY Gong, WX Gong, SD Gu, YN Guo, YQ Guo, ZJ Guo, FA Harris, KL He, M He, X He, YK Heng, HM Hu, T Hu, GS Huang, XP Huang, XT Huang, XB Ji, CH Jiang, XS Jiang, DP Jin, S Jin, Y Jin, Yi Jin, YF Lai, F Li, G Li, HH Li, J Li, JC Li, QJ Li, RY Li, SM Li, WD Li, WG Li, XL Li, XQ Li, YL Li, YF Liang, HB Liao, CX Liu, F Liu, Fang Liu, HH Liu, HM Liu, J Liu, JB Liu, JP Liu, RG Liu, ZA Liu, ZX Liu, F Lu, GR Lu, HJ Lu, JG Lu, CL Luo, LX Luo, XL Luo, FC Ma, HL Ma, JM Ma, LL Ma, QM Ma, XB Ma, XY Ma, ZP Mao, XH Mo, J Nie, ZD Nie, SL Olsen, HP Peng, ND Qi, CD Qian, H Qin, JF Qiu, ZY Ren, G Rong, LY Shan, L Shang, DL Shen, XY Shen, HY Sheng, F Shi, X Shi, HS Sun, JF Sun, SS Sun, YZ Sun, ZJ Sun, X Tang, N Tao, YR Tian, GL Tong, GS Varner, DY Wang, JZ Wang, K Wang, L Wang, LS Wang, M Wang, P Wang, PL Wang, SZ Wang, WF Wang, YF Wang, Z Wang, ZY Wang, Zhe Wang, Zheng Wang, CL Wei, DH Wei, YM Wu, XM Xia, XX Xie, B Xin, GF Xu, H Xu, ST Xue, ML Yan, F Yang
Publication date
2005/2/10
Journal
Physics Letters B
Volume
607
Issue
3-4
Pages
243-253
Publisher
North-Holland
Description
A partial wave analysis is presented of J/ψ→ϕπ+π and ϕK+K from a sample of 58M J/ψ events in the BES II detector. The f0(980) is observed clearly in both sets of data, and parameters of the Flatté formula are determined accurately: M=965±8(stat)±6(syst)MeV/c2, g1=165±10±15MeV/c2, g2/g1=4.21±0.25±0.21. The ϕππ data also exhibit a strong ππ peak centred at M=1335MeV/c2. It may be fitted with f2(1270) and a dominant 0+ signal made from f0(1370) interfering with a smaller f0(1500) component. There is evidence that the f0(1370) signal is resonant, from interference with f2(1270). There is also a state in ππ with M=1790−30+40MeV/c2 and Γ=270−30+60MeV/c2; spin 0 is preferred over spin 2. This state, f0(1790), is distinct from f0(1710). The ϕKK¯ data contain a strong peak due to f2(1525). A shoulder on its upper side may be fitted by interference between f0(1500) and f0(1710).
Total citations
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