2014/11/11 by D. Cogollo, Diego Cogollo
Computer Science · Physics and Astronomy · #Anomalous magnetic dipole moment #Anomaly (physics) #Computational Physics and Python Applications #Electron magnetic dipole moment #Electroweak interaction #Electroweak scale #Fermion #Magnetic moment #Muon #Neutrino Physics Research #Particle physics theoretical and experimental studies #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.3844/pisp.2015.42.50
published as Physics International, 2015, Volume 6, Issue 1,Pages 42-50 · arXiv admin note: text overlap with arXiv:1409.8115
arxiv created 2014/11/11 · openalex publication_date 2015/01/01 · arxiv updated 2015/11/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study an electroweak gauge extension of the standard model, so called 3-4-1 model, which does not contain exotic electric charges and it is anomaly free. We discuss phenomenological constraints of the model and compute all the corrections to the muon magnetic moment. Mainly, we discuss different mass regimes and their impact on this correction, deriving for the first time direct limits on the masses of the neutral fermions and charged vector bosons. Interestingly, the model could address the reported muon anomalous magnetic moment excess, however it would demands a rather low scale of symmetry breaking, far below the current electroweak constraints on the model. Thus, if this excess is confirmed in the foreseeable future by the g-2 experiment at FERMILAB, this 3-4-1 model can be decisively ruled out since the model cannot reproduce a sizeable and positive contribution to the muon anomalous magnetic moment consistent with current electroweak limits.