Explaining (g − 2)μ with multi-TeV sleptons

Altmannshofer, Wolfgang; Gadam, Sri Aditya; Gori, Stefania; Hamer, Nick

doi:10.1007/jhep07(2021)118

Cited by 29 publications

(19 citation statements)

References 96 publications

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“…There is an interesting proposal where the MSSM Higgs sector is extended in order to have four Higgs doublets, two of which couple just to quarks and leptons of the third generation, whereas the other two have much smaller vacuum expectation values and provide masses to the first and second generation. The model is called FSSM [87,88] and its region of parameters includes sleptons in the multi-TeV regime, beyond the current reach of the LHC, capable of solving the muon g − 2 anomaly. In particular, the extended Higgs sector of the FSSM can account for the experimental (g − 2) µ results in scenarios where the stops need to be considerably heavier than smuons, higgsinos, and EW gauginos.…”

Section: Theoretical Uncertainties and Next To Minimal Supersymmetrymentioning

confidence: 99%

High-Precision Calculations of the Higgs Boson Mass

Fazio

2022

Particles

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In this paper, we review the status of the computations of the perturbative quantum corrections to the Higgs boson mass in the Standard Model and in its supersymmetric extensions. In particular, supersymmetric theories require a very accurate computation of the Higgs boson mass, which includes corrections even up to the three-loop level, since their predictions are limited by theoretical uncertainties. A discussion about these uncertainties in the context of the Minimal and Next To Minimal Supersymmetric Standard Model is included.

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Section: Theoretical Uncertainties and Next To Minimal Supersymmetrymentioning

confidence: 99%

High-Precision Calculations of the Higgs Boson Mass

Fazio

2022

Particles

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“…There have been an appreciable number of SUSY-based analyses on (g − 2) µ after the announcement of Fermilab result [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][54][55][56][57]. Some of the above works also involve dark matter constraints.…”

Section: Yukawa Threshold Correctionsmentioning

confidence: 99%

Muon and Electron $(g-2)$ Anomalies with Non-Holomorphic Interactions in MSSM

Chakraborti¹,

Chattopadhyay²,

Mukherjee³

2021

Preprint

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The recent Fermilab muon g − 2 result and the same for electron due to fine-structure constant measurement through 133 Cs matter-wave interferometry are probed in relation to MSSM with non-holomorphic (NH) trilinear soft SUSY breaking terms, referred as NHSSM. Supersymmetric contributions to charged lepton (g − 2) l can be enhanced via the new trilinear terms involving a wrong Higgs coupling with left and right-handed scalars. Bino-slepton loop is used to enhance the SUSY contribution to g − 2 where wino mass stays at 1.5 TeV and the left and right slepton mass parameters for the first two generations are considered to be the same. Unlike many MSSM based analyses, the model does not require a light electroweakino, or light sleptons, or unequal left and right slepton masses, or a very large higgsino mass parameter. First part of the analysis involves (g − 2) µ constraint along with limits from Higgs mass, B-physics, collider data, direct detection of dark matter (DM) while focusing on a higgsino DM which is underabundant in nature. We then impose the constraint from electron g − 2 where a large Yukawa threshold corrections (an outcome of NHSSM) and opposite signs of trilinear NH coefficients associated with µ and e fields are used to satisfy the dual limits of ∆a µ and ∆a e (where the latter comes with negative sign).Varying Yukawa threshold corrections further provide the necessary flavor-dependent enhancement of ∆a e /m 2 e compared to that of ∆a µ /m 2 µ . A larger Yukawa threshold correction through A e for y e also takes away the direct proportionality of a e with respect to tan β. With a finite intercept, a e becomes only an increasing function of tan β. We identified the available parameter space in the two cases while also applying the ATLAS data on slepton pair production in the plane of slepton mass parameter and the mass of the lightest neutralino.

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“…Extensions of the SM aiming at combined explanations of a µ and (some of) the B physics anomalies have been presented in refs. [29][30][31][32][33][34][35][36][37][38][39][40], The a µ anomaly involves only leptons of the second generation and, taken alone, does not indicate any violation of flavour quantum numbers. It also does not provide a clear indication on the energy scale of the associated new dynamics [16,17].…”

Section: Introductionmentioning

confidence: 96%

Flavour alignment of New Physics in light of the (g − 2)μ anomaly

Isidori

Pagès

Wilsch

2022

J. High Energ. Phys.

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We investigate the flavour alignment conditions that New Physics (NP) models need to satisfy in order to address the (g − 2)μ anomaly and, at the same time, be consistent with the tight bounds from μ → eγ and τ → μγ. We analyse the problem in general terms within the SMEFT, considering the renormalisation group evolution of all the operators involved. We show that semileptonic four-fermion operators, which are likely to generate a sizeable contribution to the (g − 2)μ anomaly, need to be tightly aligned to the lepton Yukawa couplings and the dipole operators in flavour space. While this tuning can be achieved in specific NP constructions, employing particular dynamical assumptions and/or flavour symmetry hypotheses, it is problematic in a wide class of models with broken flavour symmetries, such as those proposed to address both charged- and neutral-current B anomalies. We quantify this tension both in general terms, and in the context of explicit NP constructions.

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Explaining (g − 2)μ with multi-TeV sleptons

Cited by 29 publications

References 96 publications

High-Precision Calculations of the Higgs Boson Mass

High-Precision Calculations of the Higgs Boson Mass

Muon and Electron $(g-2)$ Anomalies with Non-Holomorphic Interactions in MSSM

Flavour alignment of New Physics in light of the (g − 2)μ anomaly

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