W-mass Anomaly in the Simplest Linear Seesaw Mechanism

Abstract

The simplest linear seesaw mechanism can accommodate the new CDF-II $W$ mass measurement. In addition to Standard Model particles, the model includes quasi-Dirac leptons, and a second, leptophilic, scalar doublet seeding small neutrino masses. Our proposal is consistent with electroweak precision tests, neutrino physics, rare decays and collider restrictions, requiring a new charged scalar below a few TeV, split in mass from the new degenerate scalar and pseudoscalar neutral Higgs bosons.

25 pages, 9 figures, 1 table

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Cited by in corpus (11)

• Predictions from scoto-seesaw with $A_4$ modular symmetry
• Phenomenology of the simplest linear seesaw mechanism
• Dynamical scoto-seesaw mechanism with gauged $B-L$
• Prospecting bipartite Dark Matter through Gravitational Waves
• Phenomenological profile of scotogenic fermionic dark matter
• Minimal Zee model for lepton $g-2$ and $W$-mass shifts
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• $B-L$ model in light of the CDF II result
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