The FP420 R&D Project: Higgs and New Physics with Forward Protons at the LHC
The FP420 R&D Project: Higgs and New Physics with Forward Protons at the LHC
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DOI：
10.1088/1748-0221/4/10/t10001
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发表时间：
2008-06
影响因子：
1.3
通讯作者：
M. Albrow;R. Appleby;M. Arneodo;G. Atoian;I. Azhgirey;R. Barlow;I. Bayshev;W. Beaumont;L. Bon
中科院分区：
文献类型：
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作者：
M. Albrow;R. Appleby;M. Arneodo;G. Atoian;I. Azhgirey;R. Barlow;I. Bayshev;W. Beaumont;L. Bon
我们介绍了FP420研发项目，该项目一直在研究在距离ATLAS和CMS实验相互作用点420米的LHC隧道中开发和安装硅跟踪器和快速定时探测器的关键方面。这些探测器将与相应的中央探测器一起精确测量非常向前的质子，作为研究标准模型（SM）物理学的一种手段，并寻找和探测新的物理信号。本报告包括探测器的物理情况的详细描述，特别是中央独家生产的测量，第？p++p，其中出射质子保持完整，中心系统可能是单个粒子，如SM或MSSM希格斯玻色子。讨论的其他物理主题是？？然后呢？p相互作用和衍射过程。该报告包括一个详细的研究，触发策略，接受，重建效率，并预期收益率为特定的聚丙烯？在B模式下用Higgs玻色子衰变测量pH。该文件还描述了由LHC光束光学器件给出的相互作用点和FP420位置之间的检测器接受度、机器背景、新提议的连接低温恒温器和420米处的移动（"汉堡“）光束管，以及设计对LHC的射频影响。该文件的最后一部分是专门描述的3D硅传感器和相关的跟踪性能，两个快速定时检测器的设计能够准确的顶点重建在高亮度的背景抑制，以及检测器的对准和校准策略。
We present the FP420 R&D project, which has been studying the key aspects of the development and installation of a silicon tracker and fast-timing detectors in the LHC tunnel at 420 m from the interaction points of the ATLAS and CMS experiments. These detectors would measure precisely very forward protons in conjunction with the corresponding central detectors as a means to study Standard Model (SM) physics, and to search for and characterise new physics signals. This report includes a detailed description of the physics case for the detector and, in particular, for the measurement of Central Exclusive Production, pp?p++p, in which the outgoing protons remain intact and the central system may be a single particle such as a SM or MSSM Higgs boson. Other physics topics discussed are ?? and ?p interactions, and diffractive processes. The report includes a detailed study of the trigger strategy, acceptance, reconstruction efficiencies, and expected yields for a particular pp?pHp measurement with Higgs boson decay in the b mode. The document also describes the detector acceptance as given by the LHC beam optics between the interaction points and the FP420 location, the machine backgrounds, the new proposed connection cryostat and the moving (``Hamburg'') beam-pipe at 420 m, and the radio-frequency impact of the design on the LHC. The last part of the document is devoted to a description of the 3D silicon sensors and associated tracking performances, the design of two fast-timing detectors capable of accurate vertex reconstruction for background rejection at high-luminosities, and the detector alignment and calibration strategy.