Dobado González, AntonioHerrero, M. J.Hollik, W.Peñaranda , Siannah2023-06-202023-06-202002-11-010556-282110.1103/PhysRevD.66.095016https://hdl.handle.net/20.500.14352/58650©2002 The American Physical Society. The work of S.P. was supported by the Fundación Ramón Areces. Support by the European Union under HPRN-CT-2000-00149 and by the Spanish Ministerio de Ciencia y Tecnología under CICYT projects FPA 2000-0980, FPA 2000-0956 and PB98-0782 is gratefully acknowledged.We investigate the decoupling properties of the Higgs-sector-induced one-loop corrections in the lightest Higgs-boson self-couplings, in the framework of the minimal supersymmetric standard model (MSSM). The renormalized n-point vertex functions with external Higgs particles in the MSSM and in the SM are derived to the one-loop level and compared in the M(A)(0)much greater thanM(Z) limit. The computation has been done in a general R-xi gauge and the on-shell renormalization scheme is chosen. By a comparison of the renormalized lightest Higgs-boson h(0) vertex functions with respect to the corresponding SM ones, we find that the differences between the predictions of both models are summarized in the lightest Higgs-boson mass correction DeltaM(h)(0). Consequently, the radiative corrections are absorbed in the Higgs-boson mass, and the trilinear and quartic h(0) self-couplings acquire the same structure as the couplings of the SM Higgs boson. Therefore, decoupling of the heavy MSSM Higgs bosons occurs and the MSSM h(0) self-interactions converge to the SM ones in the M(A)(0)much greater thanM(Z) limit.engjournal articlehttp://prd.aps.org/abstract/PRD/v66/i9/e095016http://prd.aps.orgopen access53Effective-Field TheoryOne-Loop LevelRadiative-Corrections2-Loop LevelMssmRenormalizationDecaysSectorCollidersParticlesFísica (Física)22 Física