U.S.-Japan Cooperative Science: High Precision Spectroscopy of Lambda Hypernuclei by (e,e'K) Reaction and Gamma-Ray Measurement

美日合作科学：通过 (e,eK) 反应和伽马射线测量对 Lambda 超核进行高精度光谱分析

• 批准号: 9909188
• 负责人: Liguang Tang
• 金额: $ 6万
• 依托单位: Hampton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9909188&HistoricalAwards=false
• 关键词: U.S.; Japan; Cooperative; Science; Precision

9909188TangThis award supports a two year collaborative research project between Professor Liguang Tang of Hampton University and Professor Hirokazu Tamura of Tohoku University in Japan. The researchers will be undertaking a study of high precision spectroscopy of Lambda hypernuclei by (e.e.K) reaction and gamma-ray measurement. The project will consist of both experimentalists and theorists. The goal of the proposal is to probe the limits of conventional models of elementary interactions or models where these interactions are imbedded within the nuclear medium. The nucleus is used as a strongly interactive rich hadronic many body system. The inserted "impurity", a strange particle or quark, is the probe to explore the perturbation of a known interaction by this environment. This is termed "Hypernuclear Physics", in which models of higher order interaction forces (such as multi-pion exchange) or of quark and gluon substructure, may be explored more clearly. Such phenomena are usually described dominantly by a lower order single pion exchange picture in conventional nuclear physics. Significant knowledge has been gained from all the previous works. However, high precision experiments and data are extremely important to attack the unresolved issues. This project will provide systematic information in great detail and precision. The project brings together the efforts of two laboratories that have complementary expertise and research capabilities. Results of the research have the potential of making a major impact in the field by resolving the long standing unsolved puzzles in understanding the fundamental hyperon-nucleon interaction. This research advances international human resources through the participation of postdocs and graduate students. Through the exchange of ideas and technology, this project will broaden our base of basic knowledge and promote international understanding and cooperation. The researchers plan to publish results of the research on their web page (HTTP://www.jlab.org/~tangl).

9909188 Tang该奖项支持汉普顿大学的唐黎光教授和日本东北大学的田村博一教授之间为期两年的合作研究项目。 研究人员将通过（e.e.K）反应和伽马射线测量对Lambda超核进行高精度光谱学研究。 该项目将由实验学家和理论家组成。 该提案的目标是探索基本相互作用的传统模型或将这些相互作用嵌入核介质的模型的局限性。 原子核是一个强相互作用的富强子多体系统。 插入的“杂质”，一种奇怪的粒子或夸克，是探测这种环境对已知相互作用的扰动的探针。 这被称为“超核物理学”，其中更高阶的相互作用力（如多π交换）或夸克和胶子子结构的模型可以更清楚地探索。 在常规核物理中，这种现象通常主要用低阶单π介子交换图象来描述。 从以前的所有工作中获得了重要的知识。 然而，高精度的实验和数据对于解决尚未解决的问题至关重要。 该项目将提供非常详细和精确的系统信息。 该项目汇集了两个具有互补专业知识和研究能力的实验室的努力。研究结果有可能通过解决长期存在的未解决的难题来理解基本的超子-核子相互作用，从而在该领域产生重大影响。 本研究通过博士后和研究生的参与促进国际人力资源。 通过交流思想和技术，该项目将扩大我们的基础知识，促进国际理解与合作。 研究人员计划将研究结果发布在他们的网页上（HTTP：//www.jlab.org/jetangl）。