2016/05/25 by Dorival Gonçalves, Dorival Goncalves, Frank Krauss +2
Mathematics · Physics and Astronomy · #Algorithm #Computer science #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Geometry #Higgs boson #Large Hadron Collider #Mathematics #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.1103/physrevd.94.053014
published as Phys. Rev. D 94, 053014 (2016) · 10 pages, 9 figures
arxiv created 2016/05/25 · openalex created_date 2016/06/24 · openalex publication_date 2016/09/28 · arxiv updated 2016/10/05 · openalex updated_date 2026/08/05
Higgs boson production in association with a Z boson at the LHC is analyzed, both in the Standard Model and in simplified model extensions for dark matter. We focus on H\ensuremath→invisibles searches and show that loop-induced components for both the signal and background present phenomenologically relevant contributions to the BR(H\ensuremath→inv) limits. We also show how multijet merging improves the description of key distributions to this analysis. In addition, the constraining power of this channel to simplified models for dark matter with scalar and pseudoscalar mediators \ensuremathφ and A is discussed and compared with noncollider constraints. We find that with 100 fb^\ensuremath-1 of LHC data, this channel provides competitive constraints to the noncollider bounds, for most of the parameter space we consider, bounding the universal Standard Model fermion-mediator strength at gv<1 for moderate masses in the range of 100 GeV<m_\ensuremathφ/A<400 GeV.