2018/08/31 by W. L. Chang, We-Fu Chang, John N. Ng
Physics and Astronomy · #Anomaly (physics) #Black Holes and Theoretical Physics #Collider #Dark Matter and Cosmic Phenomena #Electroweak interaction #Electroweak scale #Gauge (firearms) #Lepton #Lepton number #Luminosity #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum mechanics #Standard Model (mathematical formulation) #Yukawa potential #hep-ph
paper · pdf · doi:10.1103/physrevd.99.075025
published as Phys. Rev. D 99, 075025 (2019) · 13 pages, 1 figure. Matches published version
openalex created_date 2018/08/31 · arxiv created 2019/04/25 · openalex publication_date 2019/04/25 · arxiv updated 2019/05/01 · openalex updated_date 2026/08/06
A new anomaly-free gauged U(1)_\ensuremathℓ lepton-number model is studied. Two Standard Model (SM) lepton generations acquire the same but oppositive-sign U(1)_\ensuremathℓ charges, while four exotic chiral leptons cancel the anomalies of the remaining lepton family. We discuss a simplified case which has the universal Yukawa couplings. It agrees with all the experimental constraints and predicts me, m_\ensuremathμ\ensuremath≪m_\ensuremathτ, and the latter is of the electroweak scale. Due to the interference between the SM and U(1)_\ensuremathℓ gauge interactions, this model robustly predicts that e, \ensuremathμ, \ensuremathτ have distinctive forward-backward asymmetries at the e+e^\ensuremath- colliders. It can be searched for at the e+e^\ensuremath- machine with \ensuremath∼TeV center-of-mass energy and an integrated luminosity \ensuremath∼ab^\ensuremath-1.