2015/12/31 by Wei Chao · 5 citations
Physics and Astronomy · #Axion #Coupling (piping) #Dark matter #Gauge (firearms) #Gauge boson #Gauge symmetry #Gauge theory #Gluon #Higgs boson #High-Energy Particle Collisions Research #Homogeneous space #Large Hadron Collider #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quark #Resonance (particle physics) #Scalar (mathematics) #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.1103/physrevd.93.115013
published as Phys. Rev. D 93, 115013 (2016) · 16 pages, 4 figures, 1 table, more references added, typos corrected, accepted for publication in Phys. Rev. D
arxiv created 2016/05/27 · openalex publication_date 2016/06/08 · arxiv updated 2016/06/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A 750 GeV resonance has been observed at the run 2 LHC in the diphoton channel. In this paper, we explain this resonance as a CP-even scalar \mathbbS that triggers the spontaneous breaking of local U(1)B or U(1)B+L gauge symmetries. \mathbbS couples to gluon and photon pairs at the one-loop level, where particles running in the loop are introduced to cancel anomalies, and the gluon fusion is the dominate production channel of \mathbbS at the LHC. The model contains a scalar dark matter candidate stabilized by the new gauge symmetry. Our study shows that both the observed production cross section at the LHC and the best fit decay width of \mathbbS can be explained in this model without conflicting with any other experimental data. Constraints on couplings associated with \mathbbS are studied, which show that \mathbbS has a negligible mixing with the standard model Higgs boson but sizable coupling with the dark matter.