CLAS+FROST: new generation of photoproduction experiments at Jefferson Lab.  

作　　者：E. Pasyuk 

机构地区：[1]Arizona State University, Tempe, AZ 85287, USA [2]Jefferson Laboratory, Newport News, VA 23606, USA

出　　处：《Chinese Physics C》2009年第12期1205-1209,共5页中国物理C（英文版）

基　　金：Supported by National Science Foundation, the U.S. Department of Energy (DOE);the French Centre National de la Recherche Scientifique and Commissariat à l’Energie Atomique, the Italian Istituto Nazionale di Fisica Nucleare, and the Korean Science,Engineering Foundation;The Southeastern Universities Research Association (SURA) operated Jefferson Lab for DOE under contract DE-AC05-84ER40150 during this work

摘　　要：A large part of the experimental program in Hall B of the Jefferson Lab is dedicated to baryon spectroscopy. Photoproduction experiments are essential part of this program. CEBAF Large Acceptance Spectrometer （CLAS） and availability of circularly and linearly polarized tagged photon beams provide unique conditions for this type of experiments. Recent addition of the Frozen Spin Target （FROST） gives a remarkable opportunity to measure double and triple polarization observables for different pseudo-scalar meson photopro- duction processes. For the first time, a complete or nearly complete experiment becomes possible and will allow model independent extraction of the reaction amplitude. An overview of the experiment and its current status is presented.A large part of the experimental program in Hall B of the Jefferson Lab is dedicated to baryon spectroscopy. Photoproduction experiments are essential part of this program. CEBAF Large Acceptance Spectrometer （CLAS） and availability of circularly and linearly polarized tagged photon beams provide unique conditions for this type of experiments. Recent addition of the Frozen Spin Target （FROST） gives a remarkable opportunity to measure double and triple polarization observables for different pseudo-scalar meson photopro- duction processes. For the first time, a complete or nearly complete experiment becomes possible and will allow model independent extraction of the reaction amplitude. An overview of the experiment and its current status is presented.

关 键 词：PHOTOPRODUCTION double polarization baryon resonance 

分 类 号：O572.33[理学—粒子物理与原子核物理]