Form factor measurements with ANDA at FAIR  

作　　者：E.Tomasi-Gustafsson 

机构地区：[1]CEA,IRFU,SPhN,Saclay,91191 Gif-sur-Yvette Cedex,France,and CNRS/IN2P3,Institut de Physique Nuclaire,UMR 8608,91406 Orsay,France

出　　处：《Chinese Physics C》2010年第6期863-868,共6页中国物理C（英文版）

摘　　要：The high intensity and high energy antiproton beams which will be produced at FAIR open the possibility to determine time-like electromagnetic form factors in a wide kinematical range, through the annihilation reaction： p ＋ p → e^＋ ＋ e^-. The status of the proposed experiment as well as the expected results are presented on the basis of realistic simulations. The impact of these measurements on the understanding of the nucleon structure, of the asymptotic properties of form factors and of the reaction mechanism are discussed using model independent statements based on symmetry properties of the strong and electromagnetic interactions in connection with space-like data.The high intensity and high energy antiproton beams which will be produced at FAIR open the possibility to determine time-like electromagnetic form factors in a wide kinematical range, through the annihilation reaction： p ＋ p → e^＋ ＋ e^-. The status of the proposed experiment as well as the expected results are presented on the basis of realistic simulations. The impact of these measurements on the understanding of the nucleon structure, of the asymptotic properties of form factors and of the reaction mechanism are discussed using model independent statements based on symmetry properties of the strong and electromagnetic interactions in connection with space-like data.

关 键 词：electromagnetic form factors ANTIPROTONS nucleon structure QCD 

分 类 号：O572.341[理学—粒子物理与原子核物理] F752.3[理学—物理]