The muon $g-2$ and $W$-mass anomalies explained and the electroweak vacuum stabilised by extending the minimal Type-II seesaw

Chakrabarty, Nabarun

doi:10.48550/arxiv.2206.11771

Cited by 3 publications

(3 citation statements)

References 89 publications

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“…Interestingly,the Yukawa couplings in equation ( 2) can also influence and modify these branching ratios along with the muon as well as electron anomalous magnetic moments. However, in this model, we avoided such situation as the contributions to these decay processes and both the anomalous magnetic moments [55,56] are negligible due to large fermionic and scalar masses. FIG.…”

Section: Neutrino Massmentioning

confidence: 99%

Origin of Neutrino Mass, Dark Matter, Leptogenesis and Inflation in Seesaw Model with Triplets

Das¹,

Khan²

2022

Preprint

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We consider a new physics model, where the standard model (SM) is extended by hyperchargeless Y = 0 triplet fermions and Higgs triplet with hypercharge Y = 2. The first two generation fermion triplets are even under the Z 2 transformation. In contrast, the third one and scalar triplet are odd under the same Z 2 transformation. It is a unifying framework for the simultaneous explanation of neutrino mass and mixing, dark matter, baryogenesis, inflation, and reheating temperature of the Universe. The two Z 2 even neutral fermions explain the neutrino low energy variables, whereas the third one can serve as a viable dark matter candidate, explaining the exact relic density.The scalar triplet is coupled nonminimally to gravity and forms the inflaton. We calculate the inflationary parameters and find them consistent with the new Planck 2018 constraints. We also do the reheating analysis for the inflaton decays/annihilations to relativistic SM particles. The triplet fermions associated with Z 2 even sector can provide the observed baryon asymmetry of the Universe at the TeV scale.

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Section: Neutrino Massmentioning

confidence: 99%

Origin of Neutrino Mass, Dark Matter, Leptogenesis and Inflation in Seesaw Model with Triplets

Das¹,

Khan²

2022

Preprint

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“…The authors in Refs. [28][29][30][31][32][33][34][35][36][37][38] have attempted to provide a common explanation for both muon (g − 2) and W-boson mass anomaly.…”

Section: Introductionmentioning

confidence: 99%

Muon ($g-2$) and W-boson mass Anomaly in a Model Based on $Z_4$ Symmetry with Vector like Fermion

Arora¹,

Kashav²,

Verma³

et al. 2022

Preprint

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The latest results of CDF-II collaboration show a discrepancy of 7σ with standard model expectations. There is, also, a 4.2σ discrepancy in the measurement of muon magnetic moment reported by Fermilab. We study the connection between neutrino masses, dark matter, muon (g − 2) and W-boson mass anomaly within a single coherent framework based on Z 4 extension of the scotogenic model with vector like lepton (VLL). Neutrino masses are generated at one loop level. The inert doublet, also, provide a solution to W-boson mass anomaly through correction in oblique parameters S, T and U . The coupling of VLL triplet ψ T to inert doublet η provides positive contribution to muon anomalous magnetic moment. In the model, the VLL triplet provides a lepton portal to dark matter (η 0 R ). The model predicts a lower bound m ee > 0.025 eV at 3σ, which is well within the sensitivity reach of the 0νββ decay experiments. The model explains muon anomalous magnetic moment ∆a µ for 1.3 < y ψ < 2.8 and mass of DM candidate in the range 152 GeV < M η 0 R < 195 GeV. The explanation of W-boson mass anomaly, further, constrain the mass of DM candidate, M η 0 R , in the range 154 GeV < M η 0 R < 174 GeV.

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“…In order to account for this large deviation from the SM W -mass prediction, new physics seems required. An interesting example is provided by neutrino mass generation schemes, which often require new particles that may shift the W-boson mass appreciably at the radiative level [40][41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

W-mass anomaly in the simplest linear seesaw mechanism

et al. 2022

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The muon $g-2$ and $W$-mass anomalies explained and the electroweak vacuum stabilised by extending the minimal Type-II seesaw

Cited by 3 publications

References 89 publications

Origin of Neutrino Mass, Dark Matter, Leptogenesis and Inflation in Seesaw Model with Triplets

Origin of Neutrino Mass, Dark Matter, Leptogenesis and Inflation in Seesaw Model with Triplets

Muon ($g-2$) and W-boson mass Anomaly in a Model Based on $Z_4$ Symmetry with Vector like Fermion

W-mass anomaly in the simplest linear seesaw mechanism

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