Experimental Nuclear Physics Research Program

我们提出的研究计划是为了更好地理解质子、中子和轻核的夸克结构。特别强调的是放在测量电磁和弱性质的核子使用电子散射在杰斐逊实验室和麻省理工学院贝茨。这些数据提供了关于核子中电荷和磁化强度空间分布的精确信息。我们的计划的一个主要组成部分是在杰斐逊实验室的G0实验，其中宇称违反极化电子散射氢和氘被用来确定奇怪的夸克反夸克对质子的电荷和磁矩的贡献。耦合到这一活动是“anapole”的质子结构，这是由宇称违反电磁效应的贡献的确定。还提出了核子激发的研究，使用极化测量反冲核子，和使用K介子电产生创建超核，其中一个核子在核系统中被替换为λ粒子。

Our proposed research program is directed towards developing a better understanding of the quark structure of protons, neutronsand light nuclei. Particular emphasis is placed on measurements of electromagnetic and weak properties of the nucleon using electron scattering at Jefferson Laboratory and MIT-Bates. Such data provide precise information about the spatial distribution of charge and magnetization in the nucleon. A major component of our program is the G0 experiment at Jefferson Laboratory, in which parity violation in polarized electron scattering from hydrogen and deuterium is used to identify the contribution of strange quark-antiquark pairs to the proton's charge and magnetic moment. Coupled to this activity is the determination of "anapole" contributions to proton structure, which arise from parity-violating electromagnetic effects. Also proposed are studies of nucleon excitations using polarization measurementsof the recoiling nucleon, and the use of kaon electroproduction to create hypernuclei in which one nucleon in a nuclear system is replaced by a lambda particle.