2018/09/27 by Q.Y. Yang, Qiang Yang, Zhang Ren-You +8 · 5 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Boson #Electron #Geometry #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Lepton #Mathematics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum chromodynamics #Scalar (mathematics) #Standard Model (mathematical formulation) #Vector boson #hep-ph
paper · pdf · doi:10.1103/physrevd.98.055034
published in Physical review. D/Physical review. D. 98(5) (American Physical Society) · 22 pages, 10 figures
openalex publication_date 2018/09/27 · arxiv created 2018/10/21 · arxiv updated 2018/10/23 · openalex created_date 2018/10/26 · openalex updated_date 2026/08/05
The Georgi-Machacek (GM) model is a distinctive TeV-scale extension of the Standard Model (SM) due to the introduction of two (one real and one complex) scalar triplets to the Higgs sector. It predicts the existence of doubly charged Higgs bosons H5^\ifmmode±\else\textpm\fi\ifmmode±\else\textpm\fi and the vacuum expectation value of Higgs triplets v_\mathrm\ensuremathΔ can reach a few tens of GeV. In this paper, we perform a parameter scan of the GM model within the H5plane benchmark scenario and investigate in detail the single production of a doubly charged Higgs boson in association with a SM-like Higgs boson via vector-boson fusion at the 14 TeV LHC and 70 TeV Super Proton-Proton Collider. Both integrated cross section and differential distributions with respect to some kinematic variables for pp\ensuremath→W^\ifmmode±\else\textpm\fiW^\ifmmode±\else\textpm\fi\ensuremath→H5^\ifmmode±\else\textpm\fi\ifmmode±\else\textpm\fih0+2 jets are provided up to the QCD next-to-leading order. In the signal-background analysis, we employ the madspin method to take into account the spin correlation and finite width effects of the intermediate Higgs and W bosons and present some kinematic distributions of final leptons. The numerical results show that the SM background can be suppressed remarkably and the H5^\ifmmode±\else\textpm\fi\ifmmode±\else\textpm\fih0 vector-boson fusion signal can be directly detected at future high-luminosity, high-energy hadron colliders by imposing a proper cut on the transverse mass M_T,\ensuremathℓ1\ensuremathℓ2.