2016/05/31 by Yusheng Liu, Yu-Sheng Liu, David McKeen +1 · 2 citations
Physics and Astronomy · #Anomalous magnetic dipole moment #Boson #Coupling constant #Dark Matter and Cosmic Phenomena #Electron #Lepton #Muon #Neutrino Physics Research #Neutron #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Scalar (mathematics) #Scalar boson #hep-ex #hep-ph #nucl-ex #nucl-th #physics.atom-ph
paper · pdf · doi:10.1103/physrevlett.117.101801
published as Phys. Rev. Lett. 117, 101801 (2016) · 6 pages, 4 figures, 1 table
openalex publication_date 2016/09/02 · arxiv created 2016/09/10 · arxiv updated 2016/09/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A new scalar boson which couples to the muon and proton can simultaneously solve the proton radius puzzle and the muon anomalous magnetic moment discrepancy. Using a variety of measurements, we constrain the mass of this scalar and its couplings to the electron, muon, neutron, and proton. Making no assumptions about the underlying model, these constraints and the requirement that it solve both problems limit the mass of the scalar to between about 100 keV and 100 MeV. We identify two unexplored regions in the coupling constant-mass plane. Potential future experiments and their implications for theories with mass-weighted lepton couplings are discussed.