摘要
介绍了双Higgs二重态模型 (2HDM)的结构和特点 ,具体分析了标准模型 (SM)和 2HDM中B介子衰变的有效哈密顿和Wilson系数 ,并由B→ππ衰变事例发现 2HDM的贡献对SM有较好改善。
In this paper we introduce the structures and features of the two Higgs doublet models (2HDM),analyse the effective Hamiltonian and Wilson coefficients of B meson decays in the standard model (SM) and 2HDM in detail,and fnd that the contributions from Higgs particls in the 2HDM improve on those in the SM through the decays of B→ππ .
基金
河南省教委自然科学基金 (19914 0 0 13)等资助项目
