Muon $$g-2$$ anomaly confronted with the higgs global data in the left-right twin Higgs models

Li, Guoli; Zeng, Qing-Guo

doi:10.1140/epjc/s10052-019-7002-2

Cited by 3 publications

(6 citation statements)

References 57 publications

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“…Please note that in the second lines of Equations ( 10) and (11) and following calculation, we assume that the right-handed neutrinos are degenerate, i.e., ν 1R = ν 2R = ν 3R = ν R , which means that there is only one flavor of the heavy neutrino (the same case for the ordinary neutrinos). Therefore, the couplings will be simply written as V j , Y j and y j , respectively, where j can be e, µ, and τ.…”

Section: Flavor-changing Couplings Of Leptons In Th Modelsmentioning

confidence: 99%

“…From the couplings of Equations ( 10) and (11), one can easily calculate the new contributions to the muon anomalous magnetic moment, which are generated by one-loop diagrams involving the exchange of W µ gauge boson and charged scalar H ± with heavy neutrino, as shown in Figure 1.…”

Section: The One-loop Muon Anomalous Magnetic Moment G −mentioning

confidence: 99%

“…In Figure 3a, the fermion loop can consist of not only top and bottom quark ttb, bbt, but also the lepton with the right-handed neutrino v R , since the neutrino mass might be quite large. The Barr-Zee two-loop contribution from quark loop can be written as [11,[88][89][90][91][92][93][94][95][96][97][98][99][100][101][102][103],…”

Section: The Analytic Expressions For Thementioning

confidence: 99%

“…Meanwhile, the Higgs decay channels are γγ, ZZ ( * ) , WW ( * ) , b b and τ + τ − . The expressions of the Higgs signal strengths have been shown in [11] and we will not repeat them here.…”

Section: Global Fit Of the 125 Gev Higgsmentioning

confidence: 99%

“…For recent works, see, e.g., refs. [6][7][8][9][10][11][12]. So-called twin Higgs (TH) models can be realized by extending the SM with discrete twin symmetry [13] and are quite appealing.…”

Section: Introductionmentioning

confidence: 99%

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The Contribution of Charged Bosons with Right-Handed Neutrinos to the Muon g − 2 Anomaly in the Twin Higgs Models

Zhou

2022

Universe

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We examine the charged boson and right-handed neutrino contribution to the muon g−2 anomaly in twin Higgs models with joint constraints of Higgs global fit data, precision electroweak data, leptonic flavor-changing decay μ→eγ, and the mass requirement of heavy-gauge bosons. It comes with the conclusion that some parameters, such as the coupling of charged Higgs to the lepton yμ, the top Yukawa yt, and heavy-gauge boson coupling to the lepton Vμ are constrained roughly in the range of 0.12≲yμ≲0.4, 0.4≲yt≲0.9, and 0.47≲Vμ≲1, respectively.

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Section: Flavor-changing Couplings Of Leptons In Th Modelsmentioning

confidence: 99%

Section: The One-loop Muon Anomalous Magnetic Moment G −mentioning

confidence: 99%

Section: The Analytic Expressions For Thementioning

confidence: 99%

Section: Global Fit Of the 125 Gev Higgsmentioning

confidence: 99%

“…For recent works, see, e.g., refs. [6][7][8][9][10][11][12]. So-called twin Higgs (TH) models can be realized by extending the SM with discrete twin symmetry [13] and are quite appealing.…”

Section: Introductionmentioning

confidence: 99%

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The Contribution of Charged Bosons with Right-Handed Neutrinos to the Muon g − 2 Anomaly in the Twin Higgs Models

Zhou

2022

Universe

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New physics explanations of aμ in light of the FNAL muon g − 2 measurement

Athron

Balázs

Jacob

et al. 2021

J. High Energ. Phys.

216

105

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The Fermilab Muon g −2 experiment recently reported its first measurement of the anomalous magnetic moment $$ {a}_{\mu}^{\mathrm{FNAL}} $$ a μ FNAL , which is in full agreement with the previous BNL measurement and pushes the world average deviation $$ \Delta {a}_{\mu}^{2021} $$ ∆ a μ 2021 from the Standard Model to a significance of 4.2σ. Here we provide an extensive survey of its impact on beyond the Standard Model physics. We use state-of-the-art calculations and a sophisticated set of tools to make predictions for aμ, dark matter and LHC searches in a wide range of simple models with up to three new fields, that represent some of the few ways that large ∆aμ can be explained. In addition for the particularly well motivated Minimal Supersymmetric Standard Model, we exhaustively cover the scenarios where large ∆aμ can be explained while simultaneously satisfying all relevant data from other experiments. Generally, the aμ result can only be explained by rather small masses and/or large couplings and enhanced chirality flips, which can lead to conflicts with limits from LHC and dark matter experiments. Our results show that the new measurement excludes a large number of models and provides crucial constraints on others. Two-Higgs doublet and leptoquark models provide viable explanations of aμ only in specific versions and in specific parameter ranges. Among all models with up to three fields, only models with chirality enhancements can accommodate aμ and dark matter simultaneously. The MSSM can simultaneously explain aμ and dark matter for Bino-like LSP in several coannihilation regions. Allowing under abundance of the dark matter relic density, the Higgsino- and particularly Wino-like LSP scenarios become promising explanations of the aμ result.

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Probing Scalar and Pseudoscalar Solutions to the g−2 Anomaly

Abu-Ajamieh

2020

Advances in High Energy Physics

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I investigate a class of models with scalar and pseudoscalar solutions to the g−2 anomaly for both the muon and the electron over the mass range of perturbativity (mϕ≲50 GeV), with Yukawa couplings proportional to the lepton’s mass. In particular, I investigate the constraints from BaBar, beam dump experiments, Z decay measured quantities, LEP mono-γ searches, ee⟶ττγ searches, and solar and horizontal branch (HB) star bounds. For a pseudoscalar, I find that no region in the parameter space can simultaneously provide a solution for both the electron and the muon anomalies while maintaining the required form of the couplings, and therefore, the pseudoscalar solution is disfavored. On the other hand, I find for the scalar case that there is an open window above ~30 MeV in the allowed region, but with significant tension with experiment for the region mϕ≳10 GeV. In addition, there is a smaller window between ~350 KeV and 1 MeV that is not ruled out by cosmological observations. Part of the first open window is expected to be covered by the proposed NA64 experiment. Similar analysis can be readily applied to other proposed solutions to the anomaly, such as solutions with Z′ or with the dark photon.

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Muon $$g-2$$ anomaly confronted with the higgs global data in the left-right twin Higgs models

Cited by 3 publications

References 57 publications

The Contribution of Charged Bosons with Right-Handed Neutrinos to the Muon g − 2 Anomaly in the Twin Higgs Models

The Contribution of Charged Bosons with Right-Handed Neutrinos to the Muon g − 2 Anomaly in the Twin Higgs Models

New physics explanations of aμ in light of the FNAL muon g − 2 measurement

Probing Scalar and Pseudoscalar Solutions to the g−2 Anomaly

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