General kinetic mixing in gauged 
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Hapitas, Timothy; Tuckler, Douglas; Zhang, Yue

doi:10.1103/physrevd.105.016014

Cited by 17 publications

(9 citation statements)

References 93 publications

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“…In summary, the model has a small parameter space, currently allowed from all experimental bounds, which can explain muon (g − 2). This has also been noticed in earlier works on minimal L µ − L τ model [8][9][10][11][12][13][14][15][16].…”

Section: The Minimal Modelsupporting

confidence: 77%

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Lepton Anomalous Magnetic Moment with Singlet-Doublet Fermion Dark Matter in Scotogenic $U(1)_{L_μ-L_τ}$ Model

Borah¹,

Dutta²,

Mahapatra³

et al. 2021

Preprint

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We study an extension of the minimal gauged Lµ − Lτ model in order to explain the anomalous magnetic moments of muon and electron simultaneously. Presence of an additional scalar doublet η and an in-built Z2 symmetry under which the right handed singlet fermions and η are odd, leads to light neutrino mass in scotogenic fashion along with a stable dark matter candidate. In spite of the possibility of having positive and negative contributions to (g − 2) from vector boson and charged scalar loops respectively, the minimal scotogenic Lµ − Lτ model can not explain muon and electron (g − 2) simultaneously while being consistent with other experimental bounds. We then extend the model with a vector like lepton doublet which not only lead to a chirally enhanced negative contribution to electron (g − 2) but also lead to the popular singlet-doublet fermion dark matter scenario. With this extension, the model can explain both electron and muon (g − 2) while being consistent with neutrino mass, dark matter and other direct search bounds. The model remains predictive at high energy experiments like collider as well as low energy experiments looking for charged lepton flavour violation, dark photon searches, in addition to future (g − 2) measurements.

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Section: The Minimal Modelsupporting

confidence: 77%

“…Gauged lepton flavour models like U (1) Lµ−Lτ provide a natural origin of muon (g − 2) in a very minimal setup while also addressing the question of the origin of light neutrino mass and mixing [2] simultaneously. Recent studies on this model related to muon (g−2) may be found in [8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Lepton Anomalous Magnetic Moment with Singlet-Doublet Fermion Dark Matter in Scotogenic $U(1)_{L_μ-L_τ}$ Model

Borah¹,

Dutta²,

Mahapatra³

et al. 2021

Preprint

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“…A modest hierarchy in the scalar VEVs, Φ 3 ∼ Φ 8 Φ 6 is needed to get the desired spectrum of leptophilic gauge boson masses. The gauge boson coupling to the L µ − L τ current is lighter than the rest, which allows it to solve the muon (g − 2) anomaly in a way consistent with all other constraints [49,50]. At the same time, the Cabibbo angle anomaly (CAA), a 3-5 σ tension in the unitarity of the top row of the CKM matrix [52][53][54][55], can be resolved by new contributions to µ → eν ν decay from two of the heavier new gauge bosons.…”

Section: Jhep03(2022)042mentioning

confidence: 93%

Gauging lepton flavor SU(3) for the muon g − 2

Alonso-Álvarez

Cline

2022

J. High Energ. Phys.

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Gauging a specific difference of lepton numbers such as Lμ− Lτ is a popular model-building option, which gives rise to economical explanations for the muon anomalous magnetic moment. However, this choice of gauge group seems rather arbitrary, and additional physics is required to reproduce the observed neutrino masses and mixings. We address these shortcomings by embedding Lμ− Lτ in the vectorial SU(3) gauge symmetry of lepton flavor. The vacuum expectation values (VEVs) of scalar fields in the fundamental, six-dimensional and adjoint representations allow for phenomenologically viable lepton and gauge boson masses. The octet scalar gives rise to charged lepton masses, and together with the triplet scalar generates masses for all the leptophilic gauge bosons except for the Lμ− Lτ one. The latter gets its smaller mass from the sextet VEVs, which also generate the neutrino masses, and are determined up to an overall scaling by the observed masses and mixings. The model predicts three heavy neutral leptons at the GeV-TeV scale as well as vectorlike charged lepton partners; it requires the mass of the lightest active neutrino to exceed 10−4 eV, and it naturally provides a resolution of the Cabibbo angle anomaly.

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“…In Refs. [15,16], a two Higgs doublet model (2HDM) augmented by an abelian gauge symmetry and a vector-like fermion family, that contribute to (g − 2) µ has also been discussed.…”

Section: Introductionmentioning

confidence: 99%

Models with two Higgs doublets and a light pseudoscalar:a portal to dark matter and the possible $\mathbf{(g-2)_μ}$ excess

Arcadi,

Djouadi,

Queiroz

2021

Preprint

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In the context of a two-Higgs doublet model, supplemented by an additional light pseudoscalar Higgs boson and a stable isosinglet fermion, we consider the possibility of addressing simultaneously the discrepancy from the standard expectation of the anomalous magnetic moment of the muon recently measured at Fermilab and the longstanding problem of the dark matter in the universe which can be accounted for by a thermal weakly interacting massive particle. We show that it is indeed possible, for a range of masses and couplings of the new light pseudoscalar and the fermionic states, to explain at the same time the two features while satisfying all other constraints from astroparticle physics and collider searches, including the constraints from flavor physics.

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General kinetic mixing in gauged U(1)Lμ−Lτ

Cited by 17 publications

References 93 publications

Lepton Anomalous Magnetic Moment with Singlet-Doublet Fermion Dark Matter in Scotogenic $U(1)_{L_μ-L_τ}$ Model

Lepton Anomalous Magnetic Moment with Singlet-Doublet Fermion Dark Matter in Scotogenic $U(1)_{L_μ-L_τ}$ Model

Gauging lepton flavor SU(3) for the muon g − 2

Models with two Higgs doublets and a light pseudoscalar:a portal to dark matter and the possible $\mathbf{(g-2)_μ}$ excess

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