Discoveries of Higgs Particle and Supersymmetry to Pioneer the Particle Physics in the 21st Century

在欧洲核子研究中心世界最高能量质子对撞机ATLAS实验的国际合作中，我们的研究小组为希格斯玻色子和超对称的发现做出了重要贡献。本课题组的物理学家和工程师参与了介子触发室、硅跟踪装置、超导螺线管磁体和基于GRID技术的区域数据分析系统的构建。超对称胶子和夸克的质量极限已经超过了800gev左右，希格斯玻色子被推入了一个很小的质量范围。我们期待在不久的将来发现这些粒子。PSI的MEG实验正在寻找一种带正电荷的介子，这种介子很少衰变为正电子和伽马。我们研究小组的物理学家提出了这个实验，设计并建造了最先进的探测器的主要部分，包括测量伽马的液态Xe量热计，一个特殊的超导螺线管磁铁和非常薄的正电子漂移室。自2008年以来，该实验一直在收集数据，并创造了介子衰变分支分数为正电子+ γ的世界纪录上限。从超弦到希格斯/超对称性现象学，我们研究小组的理论同事在广泛的研究领域做出了巨大贡献。此外，他们还与ATLAS和MEG实验员合作发表了许多出版物。

In the international collaboration of the ATLAS experiment, which is running at the world highest energy proton-proton collider at CERN, our research group made essential contributions towards discoveries of Higgs Boson and Supersymmetry. Namely, physicists and engineers in our group contribited to construct the muon-trigger chambers, silicon tracking devise, superconducting solenoid magnet, and the regional data analysis system based on the GRID technology. The mass limit of supersymmetric gluinos and squarks are already exceeding around 800 GeV, and the Higgs Boson is driven into a small mass range. We expect discoveries of these particles in the near future.The MEG experiment at PSI is searching for a positively charged muon rare decay into positron and gamma. The physicists in our research group proposed the experiment, designed and constructed the major part of the state-of-the-art detector including a liquid Xe calorimeter for gamma, a special superconducting solenoid magnet and very thin drift chambers for positron. Since 2008 the experiment is taking data and the world record upper limit of the muon decay branching fraction into positron+gamma has been established. The theoretical colleagues in our research group made vast contributions in the wide research field from superstring to Higgs/SUSY phenomenology. Also they produced many publications by collaborating with the ATLAS and MEG experimentalists.