Understanding the muon anomalous magnetic moment in light of a flavor symmetry-based Minimal Supersymmetric Standard Model

Hussain, Mehdi; Khalid, Rizwan

doi:10.1093/ptep/pty087

Cited by 3 publications

(8 citation statements)

References 61 publications

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“…A specific kind of sfermion non-universality was considered in refs. [173,207,228], where the third generation of sfermions is assumed heavier than the first two, but universality between squarks and sleptons at some high scale is retained. Up- as indicated in the legend on the right; the yellow/green coloured regions correspond to the 1σ bands corresponding to the BNL deviation (1.6) and the new deviation including FNAL (1.7), and their overlap.…”

Section: (Bl)-scenario With Light Sleptons and Binomentioning

confidence: 99%

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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.

217

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: (Bl)-scenario With Light Sleptons and Binomentioning

confidence: 99%

“…Ref. [207] also considers the (HW )-scenario with Higgsino-like LSP, but here universality between squarks and sleptons and quark flavour constraints imply only small contributions to a µ .…”

Section: Jhep09(2021)080mentioning

confidence: 99%

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

Athron

Balázs

Jacob

et al. 2021

J. High Energ. Phys.

217

105

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show abstract

“…(10) is the contribution to the χ 2 from the optimized observables for B d → K * µ + µ − decay while the second term gives the contribution from the other B physics observables given in Eq. (9). Third term in Eq.…”

Section: Scanning Procedures and Constraintsmentioning

confidence: 99%

“…This data has been providing increasingly stringent constraints on the MSSM [9,10]. Constraints from rare B decays like B s → µ + µ − , B u → τ ν τ , b → sγ are routinely used in studying bounds on the parametric spaces of different SUSY models (see, for example, [9,10] and references therein). For the rare semi-leptonic decay (B d → K * µ + µ − ), LHCb has also provided a set of quantum chromodynamics (QCD) form factor independent observables [11].…”

Section: Introductionmentioning

confidence: 99%

“…The requirement of accommodating the experimental value of g µ in a new physics scenario, such as low scale supersymmetry [14], yields an upper and a lower bound for such a theory. Several studies has been subjected to probe that whether the g µ − 2 anomaly can be resolved, provided that we also simultaneously satisfy the constraints from direct searches for SUSY particles and indirect searches through B Physics [9,15]. The discovery of the Higgs particle of mass ∼ 125 GeV [16,17] at the LHC has important effects on low scale supersymmetry.…”

Section: Introductionmentioning

confidence: 99%

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Yukawa unification with light supersymmetric particles consistent with LHC constraints

Hussain

Khalid

2019

Nuclear Physics B

Self Cite

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We investigate supersymmetric models with left-right symmetry based on the group SU (4) c × SU (2) L × SU (2) R (4-2-2) with negative sign of bilinear Higgs potential parameter µ in the context of the latest experimental results. In the backdrop of experimental results from the Large Hadron Collider, we investigate the possibility of Yukawa unification in 4-2-2 and find out the same is still not ruled out. Furthermore, this scenario also provides a satisfactory dark matter candidate. The current experimental bounds on sparticle masses, mass bounds on Higgs particle, updated phenomenological constraints from the rare decays of B meson and the anomalous magnetic moment of muon with the requirement of a Yukawa unified theory having 10% or better third family Yukawa unification are utilized to bound the parametric space of these models. *

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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.

show abstract

Understanding the muon anomalous magnetic moment in light of a flavor symmetry-based Minimal Supersymmetric Standard Model

Cited by 3 publications

References 61 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

Yukawa unification with light supersymmetric particles consistent with LHC constraints

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

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