Alternative Perspective on Gauged Lepton Number and Implications for Collider Physics

Abstract

A new anomaly-free gauged $U(1{)}_{\ell }$ lepton-number model is studied. Two standard model lepton generations acquire the same but oppositive sign $U(1{)}_{\ell }$ 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 $m_e,m_{\mu }\ll m_{\tau }$, and the latter is of the electroweak scale. Due to the interference between the SM and $U(1{)}_{\ell }$ gauge interactions, this model robustly predicts that $e,\mu ,\tau$ have distinctive forward-backward asymmetries at the $e^{+}{e}^{-}$ colliders. It can be searched for at the $e^{+}{e}^{-}$ machine with $\sim$ TeV center-of-mass energy and an integrated luminosity $\sim a{b}^{-1}$.

arXiv comment13 pages, 1 figure. Matches published version

References in corpus (14)

• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• Observation of the Higgs boson decay to a pair of tau leptons with the CMS detector
• Cross-section measurements of the Higgs boson decaying into a pair of tau-leptons in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for the lepton flavor violating decay $Z\to e\mu$ in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• A Very Narrow Shadow Extra Z-boson at Colliders
• Search for the Higgs boson decaying to two muons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Dark Matter and Vector-like Leptons From Gauged Lepton Number
• Search for the Dimuon Decay of the Higgs Boson in $pp$ Collisions at $\sqrt{s}$ = 13 TeV with the ATLAS Detector
• Lepton Flavor Violation in Extra Dimension Models
• A Minimal Model of Majoronic Dark Radiation and Dark Matter
• Some consequences of the Majoron being the dark radiation
• Renormalization Group Study of the Minimal Majoronic Dark Radiation and Dark Matter Model
• Study of Gauged Lepton Symmetry Signatures at Colliders
• Neutrino masses and gauged $U(1{)}_{\ell }$ lepton number

Cited by in corpus (2)

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