QCD Measurements of Color Transparency and Nucleon Spin Structure

颜色透明度和核子自旋结构的 QCD 测量

• 批准号: 9804015
• 负责人: Steven Heppelmann
• 金额: $ 13.5万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-15 至 2002-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9804015&HistoricalAwards=false
• 关键词: QCD; Measurements; Color; Transparency; Nucleon

This grant supports substantial participation and leadership by this group in the Brookhaven AGS experiment E850 (Color Transparency). It also supports participation in the polarized proton experiments within the STAR collaboration at the Relativistic Heavy Ion Collider. E850 will study the quantum fluctuations of the strongly interacting nucleon state with measurements of high momentum transfer quasi- elastic scattering in nuclei at beam energies from 6 to 20 GeV and with a variety of nuclear targets. Selecting events with hard hadron-nucleon primary interactions, measurements of Color Transparency will characterize the dependence of secondary nuclear interactions upon energy and scattering angle. This experiment also provides unique measurements of the light cone nucleon distributions in nuclei. In parallel, data suggesting evidence for observable short range nucleon- nucleon correlation in (p,2p+n) measurements will be collected and analyzed.

这笔赠款支持这一群体在Brookaven AGS实验E850(颜色透明度)中的实质性参与和领导。它还支持参与相对论重离子对撞机恒星合作中的极化质子实验。E850将研究强相互作用核子态的量子涨落，通过测量束流能量从6到20GeV的原子核中的高动量转移准弹性散射，以及与各种核靶的相互作用。选择具有硬强子-核子初级相互作用的事件，颜色透明度的测量将表征次级核相互作用对能量和散射角的依赖关系。这个实验还提供了对原子核中轻锥核子分布的独特测量。同时，将收集和分析在(p，2p+n)测量中表明存在可观测到的短程核子-核子关联的数据。