Study of Heavy Quark Physics with the BaBar Detector

用 BaBar 探测器研究重夸克物理

• 批准号: 0099505
• 负责人: Patricia Burchat
• 金额: $ 87.32万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099505&HistoricalAwards=false
• 关键词: Study; Heavy; Quark; Physics; BaBar

This proposal requests support for the research program in experimental particle physics of a Stanford University group whose primary goal is the elucidation of the source of CP violation through the study of the decay of mesons containing the bottom quark. The program will be carried out with the BaBar detector and PEP-II storage ring at the Stanford Linear Accelerator Center (SLAC). Within the BaBar collaboration, this group has been responsible for all detector monitoring and control hardware for the Silicon Vertex Tracker (SVT), and for the SVT data acquisition software. In the period of this request, the group intends to maintain the SVT systems they designed, built and commissioned: a radiation monitoring and beam interlock system based on PIN diodes near the beam pipe, a position-monitoring system for the SVT and drift chamber, a temperature monitoring and power supply interlock system for the SVT readout electronics, and a gas and fluid monitoring system for the SVT. The PI recently completed a one-year term as Physics Analysis Coordinator (PAC), preceded by a term as Deputy PAC. During her term as PAC, the BaBar collaboration presented its first preliminary results on the CP-violating phase, b, the B lifetimes, the B0 B0-bar mixing rate, radiative Penguin decays, charmless hadronic B decays, and other analyses at the International Conference on High Energy Physics in Osaka, Japan. The Stanford group contributed to various aspects of the lifetime, mixing, and CP analyses. The focus of this group will be on continued analysis of BaBar data, concentrating on B lifetimes and mixing, rare decays such as B+ - t+ nt and B+ - K+ n n-bar, and charm baryon physics.

该提案要求支持斯坦福大学一个小组的实验粒子物理研究计划，该小组的主要目标是通过研究含有底夸克的介子衰变来阐明CP破坏的来源。 该计划将在斯坦福大学直线加速器中心（SLAC）使用BaBar探测器和PEP-II储存环进行。 在BaBar合作中，该小组负责硅顶点跟踪器（SVT）的所有探测器监测和控制硬件，以及SVT数据采集软件。 在此请求期间，该小组打算维护他们设计、建造和调试的SVT系统：基于束管附近PIN二极管的辐射监测和束联锁系统、SVT和漂移室的位置监测系统、SVT读出电子设备的温度监测和电源联锁系统以及SVT的气体和流体监测系统。PI最近完成了为期一年的物理分析协调员（PAC）任期，之前是副PAC任期。 在她担任PAC期间，BaBar合作组在日本大坂举行的高能物理国际会议上提出了关于CP破坏相、B、B寿命、B 0 B 0-bar混合率、辐射企鹅衰变、无粲强子B衰变和其他分析的第一个初步结果。 斯坦福大学的研究小组对寿命、混合和CP分析的各个方面都做出了贡献。 这个小组的重点将是继续分析BaBar数据，集中在B寿命和混合，罕见的衰变，如B+ - t+ nt和B+ - K+ n n-bar，和魅力重子物理。