Experimental Research in the Physics of Elementary Particles

这笔赠款资助了圣地亚哥小组在费米实验室实验665，Muon深度非弹性散射方面的工作。这个实验花了几年时间来建造，现在已经准备好进行主要的数据采集运行。它将测量以前在其他实验中没有达到的动量和能量转移范围内的核子结构函数。将对夸克和双夸克碎裂进行研究，使用不同的核靶将允许进一步探索原子核中的夸克动量分布。这个项目中的实验测量使用了高能带电粒子来探测质子和原子核的结构。可以对测量结果进行分析，以确定夸克的行为，即质子的成分。这种类型的实验是最早揭示夸克存在的实验之一，并继续提供关于质子、中子和原子核组合方式的新信息。

This grant funds the San Diego group for work on Fermilab Experiment 665, Muon Deep Inelastic Scattering. This experiment has taken several years to construct and is now ready for major data-taking runs. It will measure nucleon structure functions in ranges of momentum and energy transfers not reached before in other experiments. Studies will be made of quark and diquark fragmentation, and the use of different nuclear targets will permit further exploration of the quark momentum distributions in nuclei. The experimental measurements done in this project use high energy charged particles to probe the structure of the proton and of nuclei. The measurements can be analyzed to determine the behavior of the quarks, the constituents of the proton. This type of experiment was one of the first to reveal the existence of quarks and continues to provide new information about the way protons, neutrons and nuclei are put together.