Photonic supersymmetric two-loop corrections to the muon magnetic moment

Weitershausen, P. V.; Schäfer, Marco; Stöckinger-Kim, Hyejung; Stöckinger, Dominik

doi:10.1103/physrevd.81.093004

Cited by 62 publications

(60 citation statements)

References 57 publications

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“…This 3-4σ tension of (SM) theory and experiment could be a hint for physics beyond the SM, and may be attributed to supersymmetric contributions [47], but it is also possible that some other additional cause is responsible for some or all of the deviation. In this study, we only require that the supersymmetric contribution is not too large.…”

Section: Experimental Constraintsmentioning

confidence: 99%

Supersymmetric SU(5) grand unification for a post Higgs boson era

Miller

Morais

2013

J. High Energ. Phys.

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We investigate models of supersymmetric grand unification based on the gauge group SU (5). We consider models with non-universal gaugino masses and confront them with low energy constraints, including the Higgs boson mass and the Dark Matter relic density. We also discuss fine-tuning and show the effect of not including the µ-parameter into fine tuning determinations. With this relaxation, we find viable scenarios with low fine tuning and study some model choices for gaugino mass ratios. We demonstrate that some orbifold inspired models may provide low fine-tuning and the preferred relic abundance of Dark Matter while evading all experimental constraints. We present benchmarks that should be explored at the LHC and future colliders.

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Section: Experimental Constraintsmentioning

confidence: 99%

Supersymmetric SU(5) grand unification for a post Higgs boson era

Miller

Morais

2013

J. High Energ. Phys.

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“…In other models, such as the MSSM, several classes of two-loop contributions have been evaluated [54][55][56][57][58][59][60][61]. It has been found that each class can give rise to significant corrections, and an analysis of the remaining MSSM theory uncertainty has shown that the future experimental precision can only be matched by a complete two-loop computation [62,63].…”

Section: 2)mentioning

confidence: 99%

The muon magnetic moment in the 2HDM: complete two-loop result

Cherchiglia

Kneschke

Stöckinger

et al. 2017

J. High Energ. Phys.

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Abstract:We study the 2HDM contribution to the muon anomalous magnetic moment a µ and present the complete two-loop result, particularly for the bosonic contribution. We focus on the Aligned 2HDM, which has general Yukawa couplings and contains the type I, II, X, Y models as special cases. The result is expressed with physical parameters: three Higgs boson masses, Yukawa couplings, two mixing angles, and one quartic potential parameter. We show that the result can be split into several parts, each of which has a simple parameter dependence, and we document their general behavior. Taking into account constraints on parameters, we find that the full 2HDM contribution to a µ can accommodate the current experimental value, and the complete two-loop bosonic contribution can amount to (2 · · · 4) × 10 −10 , more than the future experimental uncertainty.

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“…As is well known, the photonic contributions [40] and the (tan β) 2 -enhanced contributions [41] are both large. The photonic contributions are around −8% for the benchmark points BM1-BM3 and around −7% for BM4 due to its smaller mass scales.…”

Section: Comparison With Other Mssm Two-loop Contributionsmentioning

confidence: 86%

“…Together with the formulas provided in Refs. [40,41], this allows a compact implementation of a good approximation of the MSSM two-loop contributions to a µ .…”

Section: Discussionmentioning

confidence: 99%

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Non-decoupling two-loop corrections to (g−2)μ from fermion/sfermion loops in the MSSM

Fargnoli¹,

Gnendiger²,

Paßehr³

et al. 2013

Physics Letters B

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Two-loop contributions to the muon (g − 2) from fermion/sfermion loops in the MSSM are presented, and an overview of the full MSSM prediction for (g − 2) is given with emphasis on the behaviour in scenarios which are compatible with LHC data, including scenarios with large mass splittings. Compared to all previously known two-loop contributions, the fermion/sfermion-loop contributions can yield the largest numerical results. The new contributions contain the important universal quantities ∆α and ∆ρ, and for large sfermion masses the contributions are non-decoupling and logarithmically enhanced. We find up to 15% (30%) corrections for sfermion masses in the 20 TeV (1000 TeV) range.

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Photonic supersymmetric two-loop corrections to the muon magnetic moment

Cited by 62 publications

References 57 publications

Supersymmetric SU(5) grand unification for a post Higgs boson era

Supersymmetric SU(5) grand unification for a post Higgs boson era

The muon magnetic moment in the 2HDM: complete two-loop result

Non-decoupling two-loop corrections to (g−2)μ from fermion/sfermion loops in the MSSM

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