The mass of the lightest MSSM Higgs boson: A compact analytical expression at the two-loop level

被引:146
作者
Heinemeyer, S
Hollik, W
Weiglein, G
机构
[1] DESY Theorie, D-22603 Hamburg, Germany
[2] CERN, Div Theoret Phys, CH-1211 Geneva 23, Switzerland
[3] Univ Karlsruhe, Inst Theoret Phys, D-76128 Karlsruhe, Germany
关键词
D O I
10.1016/S0370-2693(99)00417-7
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A compact approximation formula for the mass of the lightest neutral CP-even Higgs boson, m(h), in the Minimal Supersymmetric Standard Model (MSSM) is derived from the diagrammatic two-loop result for m(h) up to O(alpha alpha(s)). By analytically expanding the diagrammatic result, the leading logarithmic and non-logarithmic as well as the dominant subleading contributions are obtained. The approximation formula is valid for general mixing in the scalar top sector and arbitrary choices of the parameters in the Higgs sector of the model. Its quality is analysed by comparing it with the full diagrammatic result. The agreement we find with the full result is better than 2GeV for most parts of the MSSM parameter space. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:179 / 191
页数:13
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