2016/01/31 by Abdelhak Djouadi, John Ellis, Rohini Godbole +1 · 2 citations
Physics and Astronomy · #Boson #Collider #Fermion #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Pseudoscalar #Quantum Chromodynamics and Particle Interactions #Scalar (mathematics) #Two-Higgs-doublet model #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep03(2016)205
52 pages, 24 figures, v2 corrects two plots and some typos, and contains a new section on production in electron-positron collisions as well as additional references
arxiv created 2016/01/31 · openalex publication_date 2016/03/01 · arxiv updated 2016/05/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
If the recent indications of a possible state Φ with mass ~ 750 GeV decaying into two photons reported by ATLAS and CMS in LHC collisions at 13 TeV were to become confirmed, the prospects for future collider physics at the LHC and beyond would be affected radically, as we explore in this paper. Even minimal scenarios for the Φ resonance and its γγ decays require additional particles with masses \gtrsim (1)/(2)mΦ . We consider here two benchmark scenarios that exemplify the range of possibilities: one in which Φ is a singlet scalar or pseudoscalar boson whose production and γγ decays are due to loops of coloured and charged fermions, and another benchmark scenario in which Φ is a superposition of (nearly) degenerate CP-even and CP-odd Higgs bosons in a (possibly supersymmetric) two-Higgs doublet model also with additional fermions to account for the γγ decay rate. We explore the implications of these benchmark scenarios for the production of Φ and its new partners at colliders in future runs of the LHC and beyond, at higher-energy pp colliders and at e + e − and γγ colliders, with emphasis on the bosonic partners expected in the doublet scenario and the fermionic partners expected in both scenarios.