期刊论文

中文

科技创新导报

1674-098X

2016

13

25

183

本校为第一机构

该研究分为3个研究组,分别按照任务书2013年度计划和要求展开研究,具体研究内容如下:（1）CMS研究组。1Higgs粒子确认及其性质研究:用2012全年数据测量H->YY的截面,并与标准模型预言相比较。在测量方法上将使用2D拟合提高灵敏度。2新物理寻找:寻找W->tb。与费米实验室合作完成,我方将负责t->wb,W->enu部分。开展SUSY粒子寻找,Top粒子产生和衰变中的新物理研究。（2）ATLAS研究组。1ATLAS实验中Higgs粒子的寻找:VBF Higgs衰变到双光子道研究;H->γγ中Higgs微分产生截面测量;H->WW*物理分析。2ATLAS实验中超对称物理研究:di-tau末态弱相互作用SUSY粒子寻找;强相互作用SUSY粒子的寻找。3top夸克物...

IHEP CMS group made a good contribution for both discovery and property measurement. As the production rate of Higgs to twogamma is very low, while the background rate is 12 magnitudes higher. To find Higgs in this channel is just like to dig out gold sandin a heap of normal sand. To reject the background effectively is the key for success. IHEP group provided the best method to rejectbackground, and method was accepted by CMS. So we solved a key problem in the two gamma channel. When measuring the property,IHEP group participated both two gamma and 4 lepton channel analyses. In the two gamma ...