LHC 上 LHT 模型中顶夸克对和 Z玻色子联合产生过程

Associated Production of Z Boson and a Pair of Top Quarks in the LHT Model at the LHC

摘要: 在具有 T 宇称的最小希格斯模型下, 对大型强子对撞机上的产生过程 p p → Z t t- 以及新的产生道p p → Z t-T + 进行了研究 . 在该模型所允许的参数空间范围内, Z t t-的产生截面有较大的相对修正, 可作为一个很好的探针来探测该模型 . 此外, 发现当 T + 质量低于 T e V 能标时, Z t-T + 与 Z t t- 相比有较大的产生率, 会对 Z t t -事例数带来一定的影响 .

Abstract: The processes of pp→Ztt and a new production channel pp→Zt T+ were studied at the Large Hadron Collider (LHC) in the framework of the littlest Higgs model with T-parity (LHT). The results showed that the relative correction of the Ztt production cross section is significant and can be served as a good probe for the LHT model in the allowed parameter space. In addition, for the mass of a T+ below TeV scale, the pp→Zt T+ production have a sizable production rate compared with that of the Ztt production, which will influence the Ztt events.