The Higgs sector of the complex MSSM at two-loop order: QCD contributions

被引：112
|
作者：
Heinemeyer, S.
Hollik, W.
Rzehak, H. [1 ]
Weiglein, G.
机构：
[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[2] Univ Durham, IPPP, Durham DH1 3LE, England
[3] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst, D-80805 Munich, Germany
[4] UC, CSIC, Inst Fis Cantabria, Santander, Spain
来源：
PHYSICS LETTERS B | 2007年 / 652卷 / 5-6期
关键词：
D O I：
10.1016/j.physletb.2007.07.030
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Results are presented for the leading two-loop contributions of O(alpha(t)alpha(s)) to the masses and mixing effects in the Higgs sector of the MSSM with complex parameters. They are obtained in the Feynman-diagrammatic approach using on-shell renormalization. The full dependence on all complex phases is taken into account. The renormalization of the appropriate contributions of the Higgs-boson sector and the scalar top and bottom sector is discussed. Our numerical analysis for the lightest MSSM Higgs-boson mass is based on the new two-loop corrections, supplemented by the full one-loop result. The corrections induced by the phase variation in the scalar top sector are enhanced by the two-loop contributions. We find that the corresponding shift in Mh(1) can amount to 5 GeV. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：300 / 309
页数：10
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