2007/04/30 by Tarek Ibrahim · 1 citation
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1103/physrevd.76.075012
published as Phys.Rev.D76:075012,2007 · 36 pages, 14 figues, revised version was published in Phys. Rev. D
openalex publication_date 2007/10/17 · arxiv created 2007/10/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We extend previous analyses of the supersymmetric loop correction to the neutral Higgs couplings to include the coupling \ensuremathχj+\ensuremathχk^\ensuremath-Hl0. The analysis completes the previous analyses where similar corrections were computed for the \ensuremathτ\ensuremathτHl0, bbHl0, ccHl0 and for ttHl0 couplings within the minimal supersymmetric standard model. The effective one-loop Lagrangian is then applied to the computation of the neutral Higgs decays. The sizes of the supersymmetric loop corrections of the neutral Higgs decay widths into \ensuremathχi+\ensuremathχj^\ensuremath- (i=1, 2; j=1, 2) are investigated and the supersymmetric loop correction is found to be in the range of 7\ensuremath∼15% in significant regions of the parameter space. By including the loop corrections of the other decay channels bb, tt, \ensuremathτ\ensuremathτ, cc, and \ensuremathχi0\ensuremathχj0 (i=1--4; j=1--4), the corrections to branching ratios for Hl0\ensuremath→\ensuremathχi+\ensuremathχj^\ensuremath- can reach as high as 40%. The effects of CP phases on the branching ratio are also investigated.