Measurement of Nucleon Spin Structure at RHIC

RHIC 中核子自旋结构的测量

• 批准号: 0099514
• 负责人: Steven Heppelmann
• 金额: $ 5.32万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2002-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099514&HistoricalAwards=false
• 关键词: Measurement; Nucleon; Spin; Structure; RHIC

This grant supports the participation of the Penn State University inthe STAR experiment at Brookhaven, including a full time researchassociate, Akio Ogawa, at Brookhaven Lab. The principal interest of thePenn State group involves the study of proton spin structure withexperiments using polarized proton beams at RHIC. The approved upgradesto the STAR detector for this physics include an EMC (Electro-MagneticCalorimeter). As this system comes online, STAR will be capable ofreconstructing the higher rate, higher transverse momentum interactionsthat are needed for polarized structure function measurements. Theutilization of these new features for a meaningful measurement of protonspin structure presents a very large software challenge. Penn State isdeveloping software that will be required to simulate, collect andanalyzed these data from STAR. Some polarized proton running at RHIC isexpected each year for the next several years and will likely be inincreasingly important component of the STAR program. The centralobjective of these experiments will be the measurement of thecontribution of gluon fields to the proton spin.

这项拨款支持宾夕法尼亚州立大学参与布鲁克海文的星星实验，包括布鲁克海文实验室的全职研究助理Akio Ogawa。宾夕法尼亚州立大学研究组的主要兴趣是在RHIC上利用极化质子束进行质子自旋结构的实验研究。经批准的用于该物理学的星星探测器包括EMC（电磁热量计）。随着该系统的上线，星星将能够重建更高速率，更高的横向动量相互作用，这是偏振结构函数测量所需的。利用这些新的功能进行有意义的测量质子自旋结构提出了一个非常大的软件挑战。宾州州立大学正在开发软件，用于模拟、收集和分析来自星星的这些数据。在RHIC中运行的一些极化质子预计在未来几年内每年都将成为星星计划中越来越重要的组成部分。 这些实验的中心目标是测量胶子场与质子自旋的相干性。