The Transition to a Quark-Gluon Description of the Nucleon: A Renewal

该项目支持汉普顿大学（HU）核实验组的研究和教育工作。这个小组是15年前成立的，目的是为了解决国家在科学方面的迫切需要，因为非洲裔美国人的代表性严重不足。根据美国物理研究所的统计数据，现在每年有一半以上的物理学博士学位授予非洲裔美国人。HU小组带头研究低能夸克强子对偶性，更普遍的是，核子的重子-介子描述和夸克-胶子描述之间的转换，包括核介质对这些核子的影响，以及低能碎裂过程的研究。在另一项重大努力中，该小组成功地为杰斐逊实验室（JLab）的BONUS实验开发了有史以来第一个有效的自由中子靶。在今后几年中，该小组将集中精力：（i）分析仍在排队或刚刚执行的JLab实验;（ii）对JLab结构功能程序结果进行全面分析，包括质子、氘核和核靶，重点是大x区域;（iii）为MINER A项目做准备，这是一项中微子物理工作，旨在精确绘制核对轴向耦合的响应;（iv）为JLab 12 GeV科学和建设项目做好准备。

This project supports the research and education efforts of theHampton University (HU) nuclear experimental group. This group wasestablished 15 years ago to address a critical national need in ascience where African-Americans are severely under-represented.According to American Institute of Physics statistics, HU nowgraduates over half of the doctoral degrees in physics awarded toAfrican-Americans annually.The HU group has spearheaded research in low-energy quark-hadronduality, and, more generally, the transition between the Baryon-Mesonand the Quark-Gluon description of nucleons, including effects of thenuclear medium on these nucleons, and the investigation of low-energyfragmentation processes. In another major effort, the group hassuccessfully developed a first-ever effective free neutron target forthe BONUS experiment at Jefferson Lab (JLab). During the upcomingyears, the group will focus on (i) the analysis of JLab experimentsstill in queue or just executed; (ii) global analysis of JLabstructure function program results, including proton, deuteron, andnuclear targets, with an emphasis on the large x region; (iii)preparation for the MINER A project, a neutrino physics effort toprecisely map the response of nuclei to the axial couplings; and (iv)gearing up for preparations for JLab 12 GeV science and constructionprojects.