OPERA：等待tau
OPERA: waiting for the tau
摘要：
OPERA实验的目的是直接观测CNGS高能中微子束中出现模式的nu_mu ~> nu_tau振荡，实验由一个高粒度的核乳胶模块靶--铅“砖”组成，配备了大量的电子探测器，用于中微子相互作用的定位和运动学分析。在2006年8月、2006年10月和2007年10月的第一次短期运行之后，该实验于今年夏初开始了第一次长期物理运行（约150天）。在1.35千吨的最终目标质量下运行，2008年的运行可以实际地提供第一次观察源自味道振荡的nu_mu的tau的机会。本文将讨论实验的不同方面，数据处理的挑战和最近的成就。它还将概述从“找砖”到顶点重建的核乳胶分析所需的各个步骤。
英文摘要：
The OPERA experiment, whose aim is the direct observation of nu_mu ~> nu_tau oscillations in appearance mode in the CNGS high-energy neutrino beam, consists of a high-granularity modular target of nuclear emulsions-lead "bricks", richly instrumented with electronic detectors necessary for the location of neutrino interactions and kinematic analysis. After the first short runs of August 2006, October 2006 and October 2007, the experiment started early this summer its first long physics run (about 150 days). Operating at the final target mass of 1.35 kton, the 2008 run can realistically offer the first chance to observe a tau originated from a flavour oscillated nu_mu. This contribution will discuss the different aspects of the experiment, the challenges of the data handling and the recent achievements. It will also outline the various steps required for the analysis in nuclear emulsions from the "brick finding" to the vertex reconstruction.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
