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

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arxiv hep-ph/0112177 v2 pith:QRX52K7U submitted 2001-12-13 hep-ph hep-ex

Andrea Brignole , Giuseppe Degrassi , Pietro Slavich , Fabio Zwirner This is my paper · ORCID
classification hep-phhep-ex
keywords correctionsalphabosonhiggsneutralparameterstwo-loopanalytical
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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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