Type II Dirac Seesaw with Observable $\Delta N_{\mathrm{eff}}$ in the light of W-mass Anomaly

Abstract

We propose a type II seesaw model for light Dirac neutrinos to provide an explanation for the recently reported anomaly in W boson mass by the CDF collaboration with $7\sigma$ statistical significance. In the minimal model, the required enhancement in W boson mass is obtained at tree level due to the vacuum expectation value of a real scalar triplet, which also plays a role in generating light Dirac neutrino mass. Depending upon the couplings and masses of newly introduced particles, we can have thermally or non-thermally generated relativistic degrees of freedom $\Delta N_{\mathrm{eff}}$ in the form of right handed neutrinos which can be observed at future cosmology experiments. Extending the model to a radiative Dirac seesaw scenario can also accommodate dark matter and lepton anomalous magnetic moment.

10 pages, 9 figures, version accepted for publication in Phys. Lett. B

References in corpus (9)

• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• Measurement of the fine-structure constant as a test of the Standard Model
• Pathways to Naturally Small Dirac Neutrino Masses
• Two-loop Dirac neutrino mass and WIMP dark matter
• Direct Detection of Non-Chiral Dark Matter
• Dark matter assisted lepton anomalous magnetic moments and neutrino masses
• Radiative neutrino masses in the singlet-doublet fermion dark matter model with scalar singlets
• Generalized Bottom-Tau unification, neutrino oscillations and dark matter: predictions from a lepton quarticity flavor approach
• Radiative Left-Right Dirac Neutrino Mass

Cited by in corpus (27)

• Interpreting the $W$-mass anomaly in the vectorlike quark models
• Dark photon kinetic mixing effects for the CDF W-mass measurement
• Scotogenic $U(1{)}_{L_{\mu }-L_{\tau }}$ origin of $(g-2{)}_{\mu }$, W-mass anomaly and 95 GeV excess
• A leptoquark and vector-like quark extended model for the simultaneous explanation of the $W$ boson mass and muon $g-2$ anomalies
• Heavier $W$ boson, dark matter and gravitational waves from strings in an $SO(10)$ axion model
• Electroweak dark matter model accounting for the CDF $W$-mass anomaly
• Freeze-in Dark Matter via Light Dirac Neutrino Portal
• Constraints on the dark photon from parity violation and the $W$ mass
• Neutrino phenomenology, W mass anomaly & muon $(g-2)$ in minimal type-III seesaw using $T^{\prime }$ modular symmetry
• Diraxiogenesis
• The CDF W-mass, muon g-2, and dark matter in a $U(1{)}_{L_{\mu }-L_{\tau }}$ model with vector-like leptons
• CMB signature of non-thermal Dark Matter produced from self-interacting dark sector
• Corrections to electroweak precision observables from mixings of an exotic vector boson in light of the CDF $W$-mass anomaly
• Affleck-Dine Cogenesis of Baryon and Dark Matter
• Collider and CMB complementarity of leptophilic dark matter with light Dirac neutrinos
• $Z$ boson mixing and the mass of the $W$ boson
• Novel effects of the $W$-boson mass shift in the 3-3-1 model
• Dark $SU(2{)}_D$ Gauge Symmetry and Scotogenic Dirac Neutrinos
• CDF-II W boson mass in the Dirac Scotogenic model
• $W$-Boson Mass Anomaly from a General $SU(2{)}_L$ Scalar Multiplet
• Using $\gamma$-ray observations of dwarf spheroidal galaxies to test the possible common origin of the W-boson mass anomaly and the GeV $\gamma$-ray/antiproton excesses
• Axionic Dirac seesaw and electroweak vacuum stability
• An alternative gauged $U(1{)}_R$ symmetric model in light of the CDF II $W$ boson mass anomaly
• $E_6$ Models in Light of Precision $M_W$ Measurements
• $B-L$ model in light of the CDF II result
• Dirac Neutrinos and Dark Matter within a Minimal Discrete Symmetry Model
• Accommodating the CDF W-boson Mass Measurement in the Beautiful Mirror Model