US-Poland Research on Nucleus-Nucleus Interaction and Ultra-high Energy Cosmic Ray Composition

这个由路易斯安那州立大学的John Wefel博士和克拉科夫核物理研究所的W. Wolter博士合作的美国-波兰研究项目的主要目标是测量最高能量事件，以便建立一个精确的、标准化的、用于确定超高能量宇宙射线组成的开创性数据集。研究人员将强调利用核乳液技术在气球实验中观察到的高多样性、高能量密度和高横向动量粒子产生事件，以获得具有统计意义的信息。结果将有助于我们了解高能核相互作用，特别是核-核碰撞，以及超高能量粒子天体物理学。反过来，这些渐进式的发现可能会增加当前科学的努力，以解释据信存在于早期宇宙的极端条件。这个基本粒子物理研究项目通过使美国和东欧的专家在共同感兴趣和能力强的领域结合互补的人才和集中研究资源，实现了推进科学知识的计划目标。

The primary objective of this U.S.-Poland research project between Dr. John Wefel of Louisiana State University and Dr. W. Wolter of the Institute of Nuclear Physics, Krakow, is to measure highest energy events in order to build an accurate, normalized, pioneering data set useful in determining the composition of ultra-high energy cosmic rays. The researchers will emphasize obtaining statistically significant information on the events of high multiplicity, high energy density and high transverse momentum particle production as observed in balloon experiments using nuclear emulsion techniques. Results should contribute to our knowledge of high energy nuclear interactions, particularly nucleus- nucleus collisions, and ultra-high energy particle astrophysics. In turn these incremental findings may add to current scientific efforts to explain extreme conditions believed to have existed in the early universe. This project in elementary particle physics research fulfills the program objective of advancing scientific knowledge by enabling experts in the United States and Eastern Europe to combine complementary talents and pool research resources in areas of strong mutual interest and competence.