The search for new physics using the 3rd generation quarks at the LHC and the development of silicon detector

希格斯玻色子是由欧洲核子研究中心的大型强子对撞机实验发现的，它与质量的起源有关。在本研究中，我们探索了希格斯粒子衰变为底夸克对的过程。虽然我们没有发现统计上显著的信号，但我们在对背景的理解和底夸克喷注的标记性能方面取得了很大的进步，这导致了2015年以后的运行中发现灵敏度的提高。作为高亮度LHC ATLAS升级的硅探测器研发的一部分，我们开发了包括探测器和数据采集在内的系统，主要用于新研制的抗辐射硅传感器的束流测试。

The Higgs boson, which is related to the origin of mass, was discovered by the LHC experiment at CERN. In this research, we searched for the decay of Higgs to bottom quark pair. Although we did not find the statistically significant signal, we achieved great improvements in understanding of the background and the bottom quark jet tagging performance, which leads to the improvement of the discovery sensitivity for the coming runs after 2015.As a part of the silicon detector R&D for the ATLAS upgrade for the high luminosity LHC, we developed the system including the detector and the data acquisition, which will be used for mainly the beam test of a newly developing rad-hard silicon sensors.