Partial wave analysis of J/ψ→pπ~0 and measurement of J/ψ→pη,pη ′  

作　　者：杨洪勋 

机构地区：[1]Institute of High Energy Physics, Chinese Academy of Sciences

出　　处：《Chinese Physics C》2009年第12期1331-1335,共5页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (19991480)

摘　　要：Based on 58 million J/ψ data collected with the BESII detector at the BEPC, Partial Wave Analysis（PWA） is performed on J/ψ→ppπ0. The new excited baryon N（2065） is confirmed. Clear signals for other N＊ states are observed and the corresponding masses, widths and spin-parity are also measured. Processes such as J/ψ→ppη,ppη＇are also studied and the branching ratios are measured.Based on 58 million J/ψ data collected with the BESII detector at the BEPC, Partial Wave Analysis（PWA） is performed on J/ψ→ppπ0. The new excited baryon N（2065） is confirmed. Clear signals for other N＊ states are observed and the corresponding masses, widths and spin-parity are also measured. Processes such as J/ψ→ppη,ppη＇are also studied and the branching ratios are measured.

关 键 词：J/ψ Decays PWA Excited Baryon states N（2065） 

分 类 号：O572.21[理学—粒子物理与原子核物理]