Study of Heavy Quark Physics with the BaBar Detector

这项提议要求资金支持与斯坦福直线加速器中心(SLAC)的巴布尔合作进行的重夸克物理实验研究。实验粒子物理学的这一研究计划围绕着一个主要的物理目标，即通过研究含有底夸克的介子的衰变来阐明CP破坏(物质-反物质不对称)的来源。第二个物理目标是通过精确研究包含B介子强子衰变的魅力夸克的重子来探索强相互作用力的各个方面。这类研究既在理论上具有挑战性，因为它们很难使用标准理论(量子色动力学或QCD)从第一原理计算出来；在实验上，因为它们发生的概率非常小。斯坦福大学的团队还将开展化学气相沉积(CVD)钻石传感器的研发计划，用于高辐射环境中的辐射监测和单粒子探测。该方案将与BABAR探测器和PEP-II储存环以及SLAC的其他设施一起实施。

This proposal requests funds to support experimental studies of heavy quark physics with the BaBar Collaboration at the Stanford Linear Accelerator Center (SLAC). This research program in experimental particle physics centers on a primary physics goal of elucidating the source of CP violation (matter-anti-matter asymmetry) through the study of the decay of mesons containing the bottom quark. A secondary physics goal is to probe aspects of the strong interaction force by making precise studies of baryons containing the charm quark of hadronic decays of the B-meson. Such studies are challenging both theoretically, since they are difficult to calculate from first principles using the standard theory (Quantum ChromoDynamics or QCD); and experimentally, since they occur with very small probability. The Stanford group will also conduct an R&D program on chemical vapor deposition (CVD) diamond sensors for use in radiation monitoring and single-particle detection in high-radiation environments. This program will be carried out with the BaBar detector and the PEP-II storage ring as well as other facilities at SLAC.