Muon $$g-2$$ g - 2 through a flavor structure on soft SUSY terms

Flores-Baez, F. V.; Gómez‐Bock, M.; Mondragón, Myriam

doi:10.1140/epjc/s10052-016-4402-4

Cited by 6 publications

(2 citation statements)

References 134 publications

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“…Such effects have been studied in refs. [193,512]; they enhance in particular the BLR-contributions and thus allow explanations of large aµ with higher values of M1, without conflict to bounds from the non-observation of τ → µγ. In contrast, slepton flavour mixing between selectrons and smuons does not enhance aµ, but it leads to specific correlations to flavourviolating decays like µ → eγ and µ → e conversion, which in turn show interesting differences between the MSSM [83,180,547] and other models such as the MRSSM which does not allow a tan β enhanced dipole contributions [226].…”

Section: Jhep09(2021)080mentioning

confidence: 98%

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

Athron

Balázs

Jacob

et al. 2021

J. High Energ. Phys.

206

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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Section: Jhep09(2021)080mentioning

confidence: 98%

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

Athron

Balázs

Jacob

et al. 2021

J. High Energ. Phys.

206

105

View full text Add to dashboard Cite

show abstract

“…Such effects have been studied in Refs. [193,498]; they enhance in particular the BLR-contributions and thus allow explanations of large aµ with higher values of M1, without conflict to bounds from the non-observation of τ → µγ. In contrast, slepton flavour mixing between selectrons and smuons does not enhance aµ, but it leads to specific correlations to flavourviolating decays like µ → eγ and µ → e conversion, which in turn show interesting differences between the MSSM [83,180,534] and other models such as the MRSSM which does not allow a tan β enhanced dipole contributions [226].…”

Section: Setup Of the Phenomenological Analysismentioning

confidence: 98%

New physics explanations of $a_μ$ in light of the FNAL muon $g-2$ measurement

Athron,

Balázs,

Jacob

et al. 2021

Preprint

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The Fermilab Muon g − 2 experiment recently reported its first measurement of the anomalous magnetic moment a FNAL µ , which is in full agreement with the previous BNL measurement and pushes the world average deviation ∆a 2021 µ 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 a µ , 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 ∆a µ can be explained. In addition for the particularly well motivated Minimal Supersymmetric Standard Model, we exhaustively cover the scenarios where large ∆a µ can be explained while simultaneously satisfying all relevant data from other experiments. Generally, the a µ 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 a µ only in specific versions and in specific parameter ranges. Among all models with up to three fields, only models with chirality enhancements can accommodate a µ and dark matter simultaneously. The MSSM can simultaneously explain a µ 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 a µ result.

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The mass-degenerate SM-like Higgs and anomaly of (g − 2)μ in μ-term extended NMSSM

Shang

Zhang

Heng

2022

J. High Energ. Phys.

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We chose the μ-term extended next-to-minimal supersymmetric standard model (μNMSSM) for this work, and we perform a phenomenological study based on the assumption that the observed Standard Model (SM)-like Higgs is explained by the presence of a double overlapping resonance and in light of the recent (g − 2)μ result. The study also takes into account a variety of experimental results, including Dark Matter (DM) direct detections and results from sparticle searches at the Large Hadron Collider (LHC). We study the properties of DM confronted with the limits from DM direct detections. As a second step, we focus our attention on the properties of the mass-degenerate SM-like Higgs bosons and on explaining the anomaly of (g −2)μ. We conclude that the anomaly of (g −2)μ can be explained in the scenario with two mass-degenerate SM-like Higgs, and there are samples that meet the current constraints and fit 1 − σ anomalies of Higgs data.

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Muon $$g-2$$ g - 2 through a flavor structure on soft SUSY terms

Cited by 6 publications

References 134 publications

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

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

New physics explanations of $a_μ$ in light of the FNAL muon $g-2$ measurement

The mass-degenerate SM-like Higgs and anomaly of (g − 2)μ in μ-term extended NMSSM

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