Studies of Strangeness, Baryon Structure and Exotic Atoms

奇异性、重子结构和奇异原子的研究

• 批准号: 0070942
• 负责人: Mary Alberg
• 金额: $ 10.8万
• 依托单位: Seattle University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0070942&HistoricalAwards=false
• 关键词: Studies; Strangeness; Baryon; Structure; Exotic

0070942Alberg This research program in nuclear theory addresses several problems related to the structure of the proton and its interactions with other hadrons. We focus on problems in which the description of the proton in terms of its constituent quarks, antiquarks, and gluons can be tested by experiment. One objective is to understand, in terms of a meson cloud model,the measured asymmetry in the number of up antiquarks and down antiquarks in the proton sea. A second objective is to determine how proton structure is manifest in the interactions between antiprotons and protons which produce strangeness. Experimental data will be used to test effectiveinteractions for quark-antiquark annihilation and creation and to test our model of polarized, intrinsic strangeness in the nucleon. A third objective is to develop an optical potential which describes the interaction of antiprotons with the proton and other nucleons in a bound state, i.e. an antiprotonic atom. Experimental energy level shifts and widths will be used to learn about nucleon density distributions and the elementary antiproton-nucleon interaction. A major focus of this program is the participation of undergraduate students as research assistants. This experience will be complementary to their coursework, and provide trainingin research methods and scientific communication that will better prepare them for graduate study, teaching, or work in industry5.

0070942 Alberg这个核理论的研究计划解决了与质子结构及其与其他强子相互作用有关的几个问题。我们集中在质子的描述，其组成夸克，反夸克和胶子可以通过实验来测试的问题。一个目标是理解，在介子云模型，测量的质子海中的上反夸克和下反夸克的数量不对称。 第二个目标是确定质子结构如何在反质子和产生奇异性的质子之间的相互作用中表现出来。实验数据将被用来测试夸克-反夸克湮灭和创造的有效相互作用，并测试我们的核子极化模型。第三个目标是发展一个光学势，描述反质子与质子和其他处于束缚态的核子（即反质子原子）的相互作用。实验能级位移和宽度将用于了解核子密度分布和基本的反质子-核子相互作用。该计划的一个主要重点是本科生作为研究助理的参与。这种经验将对他们的课程作业起到补充作用，并提供研究方法和科学交流方面的培训，为他们的研究生学习、教学或行业工作做好更好的准备5。