2Pi Photoproduction from Clas and CB-Elsa the Search for Missing Resonances.

Technical Information Center Oak Ridge Tennessee

关键词: Photonuclear reactions;    Photoproductin;    Reactions;    Partial wave analysis;    Couplings;   

RP-ID  :  DE2003807813

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

2 pi-photoproduction is one of the promising reactions to search for baryon resonances that have been predicted but have not yet been observed. The gamma p yields p pi (sup 0) pi (sup 0) (CB-ELSA) and the gamma p yields p pi (sup +) pi (sup -) (CLAS) data show interesting resonance structures. A partial wave analysis (PWA) has to be done to determine which baryon resonances contribute, what their quantum numbers and their relative couplings to the different accessible p2pi-channels and to the photon are.