High Energy Collisions at Hadron Colliders

这项提议要求支持纽约州立大学石溪分校高能物理小组的研究计划，以探索在可实现的最小距离尺度上粒子相互作用的特征。该小组提议开发升级后的D0探测器，目前正在费米实验室Tevatron对撞机上开始第二次运行。此外，该小组请求支持其目前为欧洲核子研究中心大型强子对撞机(LHC)建造的ATLAS探测器的工作，预计将于2006年投入使用。几年来，该小组的主要D0责任一直是液氩热量计电子设备的升级，以适应Run II Tevatron对撞机更高的光度和更短的束间时间间隔，以及触发的第一和第二硬件水平，特别是预放映和跟踪探测器。该小组将在低横向动量电子上寻找更尖锐的触发因素，例如J/Y和半轻子b夸克衰变。该小组打算将其未来的物理分析能力集中在电弱对称破缺问题上。具体地说，他们建议致力于寻找衰减到bb-bar喷注的共振，包括Z玻色子和假设的希格斯粒子，以及对顶夸克和W玻色子质量的精细测量。该集团的ATLAS工作将集中在建造和调试液氩热量计的高压馈电系统，以及用于从热量计收集触发和离线数据的读出驱动器系统的设计和测试。该集团已进入高压系统的建设阶段。读出驱动器原型板目前正在进行测试和改进。在此授权期内，该集团预计将完成这两个项目。他们还将通过参加QuarkNet方案以及与高中有关的几项地方倡议，继续致力于教育和外联工作。

This proposal requests support for the research program of the high energy physics group at SUNY Stony Brook to explore the character of particle interactions at the smallest distance scales achievable. The group proposes to exploit the upgraded D0 detector currently beginning Run II at the Fermilab Tevatron collider. In addition, the group requests support for its work on the ATLAS detector currently being built for the CERN Large Hadron Collider (LHC) and expected to become operational in 2006.For several years the main D0 responsibility of this group has been the liquid-argon calorimeter electronics upgrade to accommodate the higher luminosity and shortened inter-bunch time interval of the Run II Tevatron collider, and for the first and second hardware levels of the trigger, particularly for the preshower and tracking detectors. The group will pursue more incisive triggers on low transverse momentum electrons, such as those from J/Y and semileptonic b-quark decay. The group intends to focus its future physics analysis capability on issues of electroweak symmetry breaking. Specifically, they propose to work on the search for resonances decaying to b b-bar jets, including the Z boson and the hypothesized Higgs particle, as well as make refined measurements of the top-quark and W boson masses. The ATLAS work of the group will be centered on building and commissioning the high voltage feedthrough system for the liquid-argon calorimeters, and the design and test of the readout driver system used to collect trigger and offline data from the calorimeters. The group has entered the building phase for the high voltage system. The readout driver prototype boards are currently being tested and refined. During this award period, the group expects to bring both of these projects to completion. They also will continue their commitment to education and outreach through participation in the QuarkNet program, and several local initiatives related to high schools.