arXiv:hep-ph/0112177·v2·High Energy Physics — Phenomenology
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🇮🇹
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.
Comments: 23 pages, 6 figures; published version