2021/08/11 by Rupert Coy, Xun-Jie Xu
Physics and Astronomy · #Beam (structure) #Beam dump #Cathode ray #Coupling (piping) #Dark Matter and Cosmic Phenomena #Electron #Lepton #Muon #Neutrino #Neutrino Physics Research #Nuclear physics #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Scattering #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep10(2021)189
published in Journal of High Energy Physics 2021(10) (Springer Nature) · 18 pages, 6 figures
arxiv created 2021/08/11 · openalex publication_date 2021/10/01 · arxiv updated 2021/11/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A bstract We consider the light Z′ explanation of the muon g − 2 anomaly. Even if such a Z′ has no tree-level coupling to electrons, in general one will be induced at loop-level. We show that future beam dump experiments are powerful enough to place stringent constraints on—or discover—a Z ′ with loop-suppressed couplings to electrons. Such bounds are avoided only if the Z ′ has a large interaction with neutrinos, in which case the scenario will be bounded by ongoing neutrino scattering experiments. The complementarity between beam dump and neutrino scattering experiments therefore indicates that there are good prospects of probing a large part of the Z ′ parameter space in the near future.