Higgs Masses and More in the Complex MSSM with FeynHiggs
T. Hahn, S. Heinemeyer, W. Hollik, H. Rzehak, G. Weiglein
TL;DR
This paper introduces FeynHiggs 2.6, a software tool that calculates Higgs boson properties in the complex MSSM with high precision, incorporating advanced two-loop corrections for improved accuracy.
Contribution
The paper's main contribution is the implementation of fully complex O(α_tα_s) two-loop corrections in FeynHiggs, enhancing the precision of Higgs mass calculations in the complex MSSM.
Findings
Inclusion of complex two-loop corrections improves Higgs mass predictions.
FeynHiggs 2.6 provides the most precise MSSM Higgs mass evaluations to date.
Enhanced calculations of mixing angles, branching ratios, and couplings.
Abstract
We present the latest version 2.6 of FeynHiggs, a program for computing MSSM Higgs-boson masses and related observables, such as mixing angles, branching ratios, and couplings, including state-of-the-art higher-order contributions. The most important new feature is the inclusion of the fully complex O(\alpha_t\alpha_s) two-loop corrections, which enables FeynHiggs to give the most precise Higgs-mass evaluation in the complex MSSM in the Feynman-diagrammatic approach to date.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Cosmology and Gravitation Theories · Dark Matter and Cosmic Phenomena