2015/02/28 by Motoi Endo, Takeo Moroi, Mihoko M. Nojiri · 14 citations
Computer Science · Physics and Astronomy · #Boson #Collider #Computational Physics and Python Applications #Grand Unified Theory #Higgs boson #Higgs field #Minimal Supersymmetric Standard Model #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #Supersymmetry #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep04(2015)176
published in Journal of High Energy Physics 2015(4) (Springer Nature) · 24 pages, 8 figures, version accepted in JHEP
openalex publication_date 2015/04/01 · arxiv created 2015/04/30 · arxiv updated 2015/06/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Motivated by future collider proposals that aim to measure the Higgs properties precisely, we study the partial decay widths of the lightest Higgs boson in the minimal supersymmetric standard model with an emphasis on the parameter region where all superparticles and heavy Higgs bosons are not accessible at the LHC. Taking account of phenomenological constraints such as the Higgs mass, flavor constraints, vacuum stability, and perturbativity of coupling constants up to the grand unification scale, we discuss how large the deviations of the partial decay widths from the standard model predictions can be. These constraints exclude large fraction of the parameter region where the Higgs widths show significant deviation from the standard model predictions. Nevertheless, even if superparticles and the heavy Higgses are out of the reach of 14TeV LHC, the deviation may be large enough to be observed at future e+e− collider experiments.