On the O(alpha_t^2) two-loop corrections to the neutral Higgs boson masses in the MSSM

Details On the O(alpha_t^2) two-loop corrections to the neutral Higgs boson masses in the MSSM On the O(alpha_t^2) two-loop corrections to the neutral Higgs boson masses in the MSSM

2001-12-13

arxiv.org/abs/hep-ph/0112177v2

Nucl.Phys.B631:195-218,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 6 figures; published version

Scientific paper

We compute the O(alpha_t^2) two-loop corrections to the neutral CP-even Higgs boson mass matrix in the Minimal Supersymmetric Standard Model, for arbitrary values of mA and of the parameters in the stop sector, in the effective potential approach. In a large region of parameter space these corrections are sizeable, increasing the prediction for mh by several GeV. We present explicit analytical formulae for a simplified case. We discuss the inclusion of momentum-dependent corrections and some possible ways of assigning the input parameters.

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