A Proposal to Study the Electroweak Force via Neutrino Interactions and Hypernuclear Physics at CEBAF

9412771约翰斯顿研究将在LAMPF进行，以研究在各种介子衰变模式下产生的中微子的味道变化概率。一个基于200吨液体闪烁体的有源探测器将用于检测闪烁体中质子的逆β衰变后的反应产物。对这一过程和相关过程的横截面设置的限制将对不同口味中微子之间的中微子质量差异设置新的限制，至少比现有的限制提高一个数量级。电产生超核的研究将在CEBAF进行，重点是波长(超子)-核子有效相互作用。将开发一种专门的光谱仪来标记引发反应的虚拟光子。***

9412771 Johnston Research will be carried out at LAMPF into the flavor changing probability for neutrinos produced in various pion decay modes. An active detector based on 200 tons of liquid scintillator will be used to detect reaction products following inverse beta-decay on protons in the scintillator. Limits set on the cross section for this and related processes will set new limits, improved by at least an order of magnitude over existing limits, on the neutrino mass differences between different flavor neutrinos. Research in electroproduction of hypernuclei will be carried out at CEBAF, focusing on the lambda(hyperon)-nucleon effective interaction. A specialized spectrometer will be developed for tagging the virtual photon which initiates the reaction. ***