Explorations of the Universe with the BABAR and LSST Experiments

通过 BABAR 和 LSST 实验探索宇宙

• 批准号: 0652409
• 负责人: Patricia Burchat
• 金额: $ 123.27万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0652409&HistoricalAwards=false
• 关键词: Explorations; Universe; BABAR; LSST; Experiments

The fields of particle physics and cosmology have become inextricably intertwined. Accelerator based experiments, detectors in mines, and telescopes are all needed and used to explore fundamental questions such as the nature of dark matter. The Stanford group led by Principle Investigator Patricia Burchat will complete its investment in the highly productive BaBar experiment at the Stanford Linear Accelerator Center and build a new effort in cosmology through the proposed Large Synoptic Survey Telescope. On the BaBar experiment the goal is to more than double the current data sample by the time the experiment completes its nine-year program at the end of FY2008. The Stanford group will contribute to the maintenance and operation of the SVT and the SVT radiation monitoring system. Members of the group will complete ongoing searches for new physics in rare or forbidden tau and charm decays, and a diverse set of analyses involving charmed baryons. The group is also initiating a new analysis effort involving D mixing and will conduct the final time-dependent Dalitz-plot analysis of B - rho pi on the complete data sample, to extract the CKM angle alpha. The Large Synoptic Survey Telescope is the first ground-based telescope being designed from scratch to address the severe demands on systematic uncertainties needed to fully exploit weak gravitational lensing as a cosmological probe. The LSST will also address cosmological questions through studies of the growth of large scale structure, baryon acoustic oscillations, and Type Ia supernovae. The Stanford group is joining the LSST project collaboration and will contribute to areas that benefit from the experience of particle physicists and aid in the understanding and reduction of potential systematic uncertainties: the development of a detailed simulation, the study of algorithms with existing data sets, and the design and construction of calibration systems. The broader impacts of the program have several foci. The PI will continue her efforts to integrate experimental particle physicists into the LSST project through tutorials and workshops. Members of the Stanford group have been very involved in programs that involve high school teachers and students (including those traditionally under-represented in physics) in basic research. The PI has led efforts to develop new undergraduate majors that increase the cohort of students who receive an education in physics.

粒子物理学和宇宙学领域已经变得密不可分。需要基于加速器的实验，矿山中的检测器和望远镜，并用于探索基本问题，例如暗物质的性质。由主要研究员Patricia Burchat领导的Stanford集团将完成其在斯坦福线性加速器中心高产的Babar实验中的投资，并通过拟议的大型Sytoptic Survescope在宇宙学方面建立新的努力。 在Babar实验中，目标是在2008财年结束时完成其为期9年的计划时，将当前数据样本增加一倍以上。斯坦福集团将有助于SVT和SVT辐射监测系统的维护和运行。该小组的成员将在稀有或禁止的tau和魅力衰减中持续搜索新物理，以及涉及Charmed Baryons的各种分析。该组还启动了涉及D混合的新分析工作，并将在完整数据样本上对B-Rho Pi进行最终的时间依赖性Dalitz-pot分析，以提取CKM角α。 大型的天气调查望远镜是第一个从头开始设计的基于地面的望远镜，以解决对完全利用弱重力透镜作为宇宙学探针所需的系统不确定性的严重需求。 LSST还将通过研究大规模结构的生长，bary骨振荡和IA型超新星的生长来解决宇宙学问题。 斯坦福集团（Stanford Group）将加入LSST项目的合作，并将为从粒子物理学家的经验中受益的领域，并帮助理解和减少潜在的系统不确定性：开发详细的模拟，研究算法的研究与现有数据集的研究以及校准系统的设计和构建。 该计划的更广泛影响具有多个焦点。 PI将继续努力通过教程和研讨会将实验粒子物理学家整合到LSST项目中。斯坦福小组的成员非常参与了涉及基础研究中高中教师和学生（包括传统上代表性不足的学生（包括那些传统上代表性不足的学生）的计划。 PI领导了开发新的本科专业的努力，以增加接受物理学教育的学生队列。