One-loop corrections to the perturbative unitarity bounds in the CP-conserving two-Higgs doublet model with a softly broken ℤ 2 ℤ₂ symmetry

2015/12/31 by Benjamín Grinstein, Christopher W. Murphy, Patipan Uttayarat
Physics and Astronomy · #Amplitude #Boson #Crossing #Higgs boson #Limit (mathematics) #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Scattering amplitude #Symmetry breaking #Two-Higgs-doublet model #Unitarity #hep-ph

paper · pdf · doi:10.1007/jhep06(2016)070

published as JHEP06(2016)070 · v2: 1 plot corrected, other minor changes, version to appear in JHEP

openalex publication_date 2016/06/01 · arxiv created 2016/06/14 · openalex created_date 2016/06/24 · arxiv updated 2016/06/29 · openalex updated_date 2026/08/06

Abstract

We compute all of the one-loop corrections that are enhanced, O(λ i λ j /16π 2), in the limit s ≫ |λ i |v 2 ≫ M 2 , s ≫ m 12 2 to all the 2 → 2 longitudinal vector boson and Higgs boson scattering amplitudes in the CP -conserving two-Higgs doublet model with a softly broken ℤ₂ symmetry. In the two simplified scenarios we study, the typical bound we find is |λ i (s)| ⪷ 4.

Citations

• Combined Measurement of the Higgs Boson Mass in pp Collisions at √(s)=7 and 8 TeV with the ATLAS and CMS Experiments
• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Lee-Quigg-Thacker bounds for Higgs boson masses in a two-doublet model
• Tree-unitarity bounds for THDM Higgs masses revisited
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• Theory and phenomenology of two-Higgs-doublet models
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Automated one-loop calculations in four and D dimensions