Particle spectrum in the modified nonminimal supersymmetric standard model in the strong Yukawa coupling regime
Particle spectrum in the modified nonminimal supersymmetric standard model in the strong Yukawa coupling regime
复制标题
强汤川耦合状态下修正的非最小超对称标准模型中的粒子谱
DOI：
10.1134/1.1342876
复制
发表时间：
2000
影响因子：
1.1
通讯作者：
M. Trusov
中科院分区：
文献类型：
--
作者：
R. Nevzorov;M. Trusov
A theoretical analysis of solutions of renormalization group equations in the minimal supersymmetric standard model, which lead to a quasi-fixed point has shown that the mass of the lightest Higgs boson in these models does not exceed 94 ± 5 GeV. This implies that a considerable part of the parameter space in the minimal supersymmetric model is in fact eliminated by existing LEPII experimental data. In the nonminimal supersymmetric standard model the upper bound on the mass of the lightest Higgs boson reaches its maximum in the strong Yukawa coupling regime when the Yukawa constants are substantially greater than the gauge constants on the grand unification scale. In the present paper the particle spectrum is studied using the simplest modification of the nonminimal supersymmetric standard model which gives a self-consistent solution in this region of parameter space. This model can give mh ∼ 125 GeV even for comparatively low values of β ≥ 1.9. The spectrum of Higgs bosons and neutralinos is analyzed using the method of diagonalizing mass matrices proposed earlier. In this model the mass of the lightest Higgs boson does not exceed 130.5 ± 3.5 GeV.
