RUI: Studies of Hadron Structure and Interactions

RUI：强子结构和相互作用的研究

• 批准号: 0555706
• 负责人: Mary Alberg
• 金额: $ 12.1万
• 依托单位: Seattle University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0555706&HistoricalAwards=false
• 关键词: RUI; Studies; Hadron; Structure; Interactions

The proposed research will study fundamental questions in theoretical nuclear physics related to the structure of hadrons and their interactions. It will focus on three areas of contemporary theoretical and experimental interest: parton distributions in hadrons, strangeness production in antiproton-proton interactions, and the renormalization of singular potentials. Parton distributions in hadrons will be calculated using a meson cloud model to include hadronic degrees of freedom, supplemented by a statistical model which includes quark and gluon processes. This project will address one of the outstanding challenges to theory posed by recent experiment, the excess of ubar over dbar quarks in the proton for large values of x, measured by E866 at FermiLab. High precision calculations of strangeness production in pbar-p reactions will be made. These calculations will be tested by the recently published spin transfer measurements of PS185 at CERN, which disagree with all theoretical predictions. The regularization and limit cycle behavior of singular potentials will be studied. Prior work will be extended to higher energy and higher partial waves. This work is relevant for effective field theory and has applications in a broad spectrum of physics, from Efimov states to cold atom scattering.Broader impacts of the project derive from its integration of research and education in an undergraduate institution which has a diverse student population. Student research assistants will be recruited from a department which has a high percentage of women physics majors. The project will provide on-campus research experience that increases the number of pathways to the Ph.D. that are offered to groups currently underrepresented in the physics community. The research topics have been chosen so that they are accessible to undergraduates. Students will receive training in research methods and scientific communication and will present their work in papers, posters and talks at meetings of professional societies. In addition to the presentation of research findings in journal articles and at scientific meetings, the P.I. will give seminars and colloquia at other undergraduate institutions.

拟议的研究将研究与哈德子及其相互作用有关的理论核物理学中的基本问题。它将重点关注当代理论和实验兴趣的三个领域：黑龙的分布，抗蛋白质 - 普罗顿相互作用中的陌生产生以及奇异潜力的重生化。将使用Meson Cloud模型来计算Hadron中的Parton分布，以包括Hadroonic的自由度，并补充了包括夸克和Gluon过程的统计模型。该项目将解决最近实验对理论的重要挑战之一，即质子中的dbar夸克的过剩，对于X的大量X，由Fermilab的E866测量。将进行高精度计算PBAR-P反应中的陌生产生。这些计算将通过最近公布的CERN的PS185的自旋传输测量值来测试，该测量不同意所有理论预测。将研究单数电位的正则化和限制周期行为。先前的工作将扩展到更高的能量和较高的部分波。这项工作与有效的现场理论有关，并且在各种物理学中都有应用，从埃菲莫夫州到冷原子散射。学生研究助理将从拥有高比例的女性物理专业的部门招募。 该项目将提供校园研究经验，以增加博士学位的途径。这些提供给物理界当前人数不足的团体。已经选择了研究主题，以便在本科生可以访问它们。学生将接受研究方法和科学沟通的培训，并将在专业社会会议上的论文，海报和演讲中介绍他们的作品。 除了介绍期刊文章和科学会议上的研究结果外，P.I.将在其他本科机构举办研讨会和座谈会。