2016/05/11 by Lawrence J. Hall, Keisuke Harigaya, Yasunori Nomura · 44 citations
Physics and Astronomy · #Coupling (piping) #Gauge (firearms) #Grand Unified Theory #High-Energy Particle Collisions Research #Large Hadron Collider #Minimal Supersymmetric Standard Model #Multiplet #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Resonance (particle physics) #Supersymmetry #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep07(2016)149
published in Journal of High Energy Physics 2016(7) (Springer Nature) · 26 pages, 11 figures
arxiv created 2016/05/11 · openalex publication_date 2016/07/01 · arxiv updated 2016/08/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Perturbative supersymmetric gauge coupling unification is possible in six theories where complete SU (5) TeV-scale multiplets of vector matter account for the size of the reported 750 GeV diphoton resonance, interpreted as a singlet multiplet S=(s+ia)/√(2) . One of these has a full generation of vector matter and a unified gauge coupling α G ∼ 1. The diphoton signal rate is enhanced by loops of vector squarks and sleptons, especially when the trilinear A couplings are large. If the SH u H d coupling is absent, both s and a can contribute to the resonance, which may then have a large apparent width if the mass splitting from s and a arises from loops of vector matter. The width depends sensitively on A parameters and phases of the vector squark and slepton masses. Vector quarks and/or squarks are expected to be in reach of the LHC. If the SH u H d coupling is present, a leads to a narrow diphoton resonance, while a second resonance with decays s → hh, W + W − , ZZ is likely to be discovered at future LHC runs. In some of the theories a non-standard origin or running of the soft parameters is required, for example involving conformal hidden sector interactions.