Baryon Spectroscopy via Vector Meson and Hyperon Production

NSF的提议使PI能够继续并扩大他在弗吉尼亚州纽波特纽斯杰斐逊实验室的研究活动，与加州大学的核物理小组合作。该研究计划集中在那些有望对我们理解激发核子光谱和组成夸克模型产生重大影响的实验上。各种模型计算表明，矢量介子和超子的光产生在寻找“缺失共振”方面最为敏感，即成分夸克模型预测的但尚未在实验上观察到的激发核子态。该实验计划包括分析项目以及新仪器的设计，特别是冻结的自旋靶和高度分段的启动计数器，用于杰斐逊实验室B厅的极化实验，这是唯一可以进行此类实验的地方。

The NSF proposal enables the PI to continue and expand his research activities at Jefferson Lab, Newport News, VA, in collaboration with the nuclear physics group at CUA. The research program concentrates on those experiments that are expected to have a major impact in our understanding of the spectrum of excited nucleons and the constituent quark models. Various model calculations show that the photoproduction of vector mesons and hyperons is most sensitive in the search for "missing resonances", i.e. excited nucleon states which are predicted by constituent quark models but haven't been observed experimentally. The experimental program covers analysis projects as well as the design of new instrumentations, especially a frozen spin target and highly segmented start counters, for polarization experiments in Jefferson Lab's Hall B, the only place where such experiments can be performed.