2002/06/30 by A. Brignole, Andrea Brignole, G. Degrassi +3 · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Boson #Higgs boson #Mathematical physics #Minimal Supersymmetric Standard Model #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Renormalization #Scalar (mathematics) #hep-ph
paper · pdf · doi:10.1016/s0550-3213(02)00748-4
published as Nucl.Phys.B643:79-92,2002 · 14 pages, 4 figures. Version to appear in Nucl. Phys. B
arxiv created 2002/09/10 · openalex publication_date 2002/11/01 · arxiv updated 2011/01/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We compute the O(ab*as) two-loop corrections to the neutral Higgs boson masses in the Minimal Supersymmetric Standard Model, using the effective potential approach. Such corrections can be important in the region of parameter space corresponding to tan(beta)>>1 and sizeable mu. In spite of the formal analogy with the O(at*as) corrections, there are important differences, since the dominant effects are controlled by the sbottom-Higgs scalar couplings. We propose a convenient renormalization scheme that avoids unphysically large threshold effects associated with the bottom mass, and absorbs the bulk of the O(ab*as + ab*at) corrections into the one-loop expression. We give general explicit formulae for the O(ab*as) corrections to the neutral Higgs boson mass matrix. We also discuss the importance of the O(ab2) corrections and derive a formula for their contribution to mh in a simple limiting case.