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$W$ mass in a model with vector-like leptons and $U(1)^\prime$
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abstract
We study the effects of vector-like leptons on the $W$ boson mass in a model with a vector-like $U(1)^\prime$ gauge symmetry. This model provides simultaneous explanations for the recent anomalies in the muon anomalous magnetic moment and the semi-leptonic decays of $B$ mesons. We found that the recent result of the $W$ boson mass precise measurement at CDF can be explained if the charged (neutral) vector-like lepton is lighter than 250 (80) GeV. The light vector-like leptons may not be excluded by collider experiments if these decay to a physical mode of the $U(1)^\prime$ breaking scalar field.
Forward citations
Cited by 2 Pith papers
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Investigating vector-like leptons decaying into an electron and missing transverse energy in e$^{+}$ e$^{-}$ collisions with $\sqrt{s} = 500$ GeV at the ILC
Simulated ILC data at 500 GeV with 1000 fb^-1 would exclude vector-like leptons up to about 100-180 GeV for small mass splittings, and across the whole studied range for a 100 GeV splitting, at a Yukawa coupling of 0.1.
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Searching for vector-like leptons decaying into an electron and missing transverse energy in e$^{+}$e$^{-}$ collisions with $\sqrt{s} = 240$ GeV at the FCC-ee
Monte Carlo projections for FCC-ee at 240 GeV set 95% CL exclusion limits on vector-like lepton mass and Yukawa coupling in a lepton-portal scalar dark-matter scenario if no signal appears.
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