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.
Brignole, A., Degrassi, G., Slavich, P., Zwirner, F. (2002). On the O(alpha(2)(t)) two-loop corrections to the neutral Higgs boson masses in the MSSM. NUCLEAR PHYSICS. B, 631(1-2), 195-218.
On the O(alpha(2)(t)) two-loop corrections to the neutral Higgs boson masses in the MSSM
DEGRASSI, GIUSEPPE;
2002-01-01
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 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
