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

Andrea Brignole·Giuseppe Degrassi·Pietro Slavich·Fabio Zwirner
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Abstract

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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Andrea Brignole, Giuseppe Degrassi, Pietro Slavich, Fabio Zwirner. 2002-04-08. On the O(alpha_t^2) two-loop corrections to the neutral Higgs boson masses in the MSSM. https://doi.org/10.1016/s0550-3213(02)00184-0

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