A Collaborative Effort between the United States and Colombia on the Research with Linearly-Polarized Photons

美国与哥伦比亚合作开展线偏振光子研究

• 批准号: 0101815
• 负责人: Philip Cole
• 金额: $ 3.26万
• 依托单位: University of Texas at El Paso
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-06-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0101815&HistoricalAwards=false
• 关键词: Collaborative; Effort; between; United; States

0101815ColeThis Americas award will support a collaborative effort between Dr. Philip L. Cole, University of Texas at El Paso, Dr. Franz J. Klein, Florida International University, and Dr. Juan Carlos Sanabria, Universidad de los Andes, Colombia, with the purpose of completing a series of experiments, which will make use of the unique probe of a beam of linearly-polarized photons. These experiments will measure the polarization observable for reactions involving meson photoproduction. The objective is to improve the understanding of the underlying symmetry of the quark degrees of freedom in the nucleon; the nature of the parity exchange between the incident photon and the target nucleon, and the mechanism of associated strangeness production in electromagnetic reactions. The first phase of the experiments, investigation of the nature of the underlying structure of protons and neutrons, will be performed at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) in Newport, Virginia, where powerful computers will allow for the rapid acquisition and thorough analysis of the data. This will enable the researchers to measure high-multiplicity events over most of the phase space at high rates with an unprecedented high quality beam of continuous-wave electrons. The collaboration will make possible the search of previously unmeasurable baryon resonances and will shed considerable light on the internal symmetries and dynamics of an assembly of three quarks, further aiding in understanding the nature of the strong force.**** .

0101815科尔这个美洲奖将支持菲利普L。德克萨斯大学埃尔帕索分校的科尔、佛罗里达国际大学的Franz J. Klein博士和哥伦比亚安第斯山脉大学的Juan卡洛斯·萨纳布里亚博士，他们的目的是完成一系列实验，这些实验将利用一束线偏振光子的独特探针。 这些实验将测量可观察到的涉及介子光生反应的偏振。 目标是提高对核子中夸克自由度的基本对称性的理解;入射光子和目标核子之间宇称交换的性质，以及电磁反应中相关奇异性产生的机制。 实验的第一阶段，调查质子和中子的基本结构的性质，将在弗吉尼亚州纽波特的托马斯杰斐逊国家加速器设施（杰斐逊实验室）进行，强大的计算机将允许快速采集和彻底分析数据。 这将使研究人员能够用前所未有的高质量连续波电子束以高速率测量大部分相空间上的高多重性事件。 这项合作将使以前无法测量的重子共振的搜索成为可能，并将对三个夸克组装的内部对称性和动力学产生相当大的影响，进一步帮助理解强作用力的性质。.