Journal
NUCLEAR PHYSICS B
Volume 631, Issue 1-2, Pages 195-218Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0550-3213(02)00184-0
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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 m(A) 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 m(h), 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. (C) 2002 Elsevier Science B.V. All rights reserved.
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