Hard Scattering Processes in QCD

该奖项是根据2009年美国复苏和再投资法案资助的（Public Law 111-5）.《杰斐逊实验室》，纽波特纽斯（弗吉尼亚州），布鲁克海文的相对论重离子对撞机（纽约），以及世界各地的其他设施（并计划）探索各种涉及强相互作用粒子的高能碰撞（像质子），以揭示它们的夸克和胶子的子结构--量子色动力学（强相互作用的基本和微观理论）建立的基本实体。 虽然在过去只有一维图像是可能的，但最近的发展使人们能够获得质子和其他强相互作用粒子的三维视图。该项目的主要目标是为正在进行的实验提供理论支持，并帮助加强未来实验活动的计划。它还有望获得关于量子色动力学如何精确描述某类高能碰撞的新见解，即那些只涉及一个粒子极化的过程。众所周知，要为这些过程找到合适的框架是非常困难的。目前，理论和实验方面都在对这些过程进行深入研究。这个项目的更广泛影响主要体现在研究生的培训和教育方面，每年还举办一次关于理论粒子和强子物理的讲座。这一项目还将与坦普尔大学实验强子物理小组的活动有更多的重叠。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).The Jefferson Laboratory in Newport News (Virginia), the Relativistic Heavy Ion Collider in Brookhaven (New York), and other facilities throughout the world already (and plan to) explore a variety of high energy collisions involving strongly interacting particles (like the proton) in order to reveal their substructure in terms of quarks and gluons --- the elementary entities on which Quantum Chromodynamics (the fundamental and microscopic theory of the strong interaction) is build. While in the past only a 1-dimensional picture was possible, recent developments allow one to get a 3-dimensional view of the proton and of other strongly interacting particles. The major goal of the proposed project is to provide theoretical support for the ongoing experiments and to help sharpening the plans for future experimental activities. It is also expected to get new insights on how precisely Quantum Chromodynamics can describe a certain class of high energy collisions, namely those processes where polarization of just one particle is involved. It is notoriously challenging to find the proper framework for such processes, which currently are intensely studied both from the theoretical as well as the experimental side.The broader impact of this project, which is accompanied by a yearly lecture on theoretical particle and hadronic physics, is primarily in the training and education of graduate students. This project will also enable a greater overlap with the activities of the experimental hadron physics group at Temple University.