2015/12/31 by Chengfeng Cai, Zhao-Huan Yu, Hong-Hao Zhang · 3 citations
Physics and Astronomy · #Excited state #Fermion #Geometry #Gluon #High-Energy Particle Collisions Research #Large Hadron Collider #Large extra dimension #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Resonance (particle physics) #Scalar (mathematics) #Singlet state #hep-ph
paper · pdf · doi:10.1103/physrevd.93.075033
published as Phys. Rev. D 93, 075033 (2016) · 23 pages, 5 figures, references added, accepted for publication in PRD
openalex publication_date 2016/04/26 · arxiv created 2016/04/27 · arxiv updated 2016/04/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We interpret the 750 GeV diphoton excess recently found in the 13 TeV LHC data as a singlet scalar in an extra dimensional model, where one extra dimension is introduced. In the model, the scalar couples to multiple vectorlike fermions, which are just the Kaluza-Klein modes of SM fermions. Mediated by the loops of these vectorlike fermions, the \ensuremathφ effective couplings to gluons and photons can be significantly large. Therefore, it is quite easy to obtain an observed cross section for the diphoton excess. We also calculate the cross sections for other decay channels of \ensuremathφ, and find that this interpretation can evade the bounds from the 8 TeV LHC data.