电弱规范玻色子反常相互作用的有效拉氏量描述  

The effective Lagrangian formulation of the anomalous quartic couplings between electroweak gauge bosons

作　　者：孙衍斌[1] 王建飞[1] 李杨[1] 王晶晶[1] 

机构地区：[1]辽宁师范大学物理与电子技术学院,辽宁大连116029

出　　处：《辽宁师范大学学报（自然科学版）》2013年第2期163-167,共5页Journal of Liaoning Normal University:Natural Science Edition

摘　　要：电弱规范玻色子之间的反常相互作用对于进一步检验标准模型和寻找超出标准模型的新物理信号都具有重要意义.首先详细推导了粒子物理标准模型中电弱规范玻色子自相互作用的显示形式,然后在介绍探索新物理的有效拉氏量方法基础上,用有效拉氏量方法给出了电弱规范玻色子间反常相互作用的具体形式.根据洛仑兹结构的不同,这些反常相互作用被分成3类:(1)只含Higgs场协变微商的项;(2)同时含Higgs场协变微商和规范场强张量的项;(3)只含规范场强张量的项.The study of the anomalous interactions between electroweak gauge bosons plays an critical role in the further confirmation of the Standard Model（SM） and the search for the new physics sig- nals beyond the SM. In this paper the self-interactions between electroweak gauge bosons are dis- cussed in detail within the SM. Then the effective lagrangian approach which can be used to describe and explore new physics is presented. Finally,the anomalous couplings between these gauge bosons are formulated by means of the effective lagrangian approach. According to the Lorentz structure, these anomalous couplings are divided into three classes. （1）containing only the covariant derivative of the Higgs field D^μФ, （2）containing both D^μФ and the gauge field strength tensors, （3）containing just the gauge field strength tensors.

关 键 词：电弱规范玻色子 反常耦合 有效拉氏量 

分 类 号：O572.24[理学—粒子物理与原子核物理]