Recent results on nucleon resonance electrocouplings from the studies of π~+π~-p electroproduction with the CLAS detector

摘要：

Recent results on nucleon resonance studies in π~+π~-p electro- production off protons with the CLAS detector are presented. The analysis of CLAS data allowed us to determine all essential contributing mechanisms, providing a credible separation between resonant and non-resonant parts of the cross sections in a wide kinematical area of invariant masses of the final hadronic system 1.3< W< 1.8 GeV and photon virtualities 0.2< Q~2< 1.5 GeV~2. Electrocouplings of several excited proton states with masses less than 1.8 GeV were obtained for the first time from the analysis of π~+π~-p exclusive electroproduction channel.

关键词： nucleon resonances electromagnetic form factors nucleon structure

作者: V.I.Mokeev V.D.Burkert L.Elouadrhiri G.V.Fedotov E.N.Golovach B.S.Ishkhanov

作者单位: Jefferson Lab,Newport News,12000 Jefferson Ave,VA 23606,USA;Skobeltsyn Nuclear Physics Institute at Jefferson Lab,Newport News,12000 Jefferson Ave,VA 23606,USA Skobeltsyn Nuclear Physics Institute at Moscow State University,Moscow 119899,Russia Skobeltsyn Nuclear Physics Institute at Moscow State University,Moscow 119899,Russia;Physics Departm

会议类型: 国际会议

会议名称: The 12th International Workshop on the Physics of Ezcited Nucleon NSTAR2009(2009激发态核子物理研讨会)

会议地点: 北京

会议语种:英文

页码: 1210-1215

在线出版日期: 2009-04-19（万方平台首次上网日期，不代表论文的发表时间）