The tiny (g-2) muon wobble from small-μ supersymmetry

Baum, Sebastian; Carena, Marcela; Shah, Nausheen R.; Wagner, Carlos E. M.

doi:10.1007/jhep01(2022)025

Cited by 49 publications

(21 citation statements)

References 142 publications

(155 reference statements)

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“…We also found that the DM preferred to be heavier than about 300 GeV when we implemented detailed Monte Carlo simulations for the constraints from the latest LHC searches for electroweakinos. These observations significantly improve the conclusions of [77] and [78], since more LHC analyses were considered carefully. be as large as several TeV, because DM-nucleon scattering rates are enhanced by a factor of 1/(1 − m 2 χ0 1 /µ 2 ) 2 as m 2 χ0 1 /µ 2 → 1 (see discussions in Appendix A).…”

Section: Introductionsupporting

confidence: 58%

Impact of recent $(g-2)_μ$ measurement on the light CP-even Higgs scenario in general Next-to-Minimal Supersymmetric Standard Model

Cao,

Lian,

Pan

et al. 2022

Preprint

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The General Next-to-Minimal Supersymmetric Standard Model (GN-MSSM) is an attractive theory that is free from the tadpole problem and the domainwall problem of Z 3 -NMSSM, and can form an economic secluded dark matter (DM) sector to naturally predict the DM experimental results. It also provides mechanisms to easily and significantly weaken the constraints from the LHC search for supersymmetric particles. These characteristics enable the theory to explain the recently measured muon anomalous magnetic moment, (g − 2) µ , in a broad parameter space that is consistent with all experimental results and at same time keeps the electroweak symmetry breaking natural. This work focuses on a popular scenario of the GNMSSM in which the next-to-lightest CP-even Higgs boson corresponds to the scalar discovered at the Large Hadron Collider (LHC). Both analytic formulae and a sophisticated numerical study show that in order to predict the scenario without significant tunings of relevant parameters, the Higgsino mass µ tot 500 GeV and tan β 30 are preferred. This character, if combined with the requirement to account for the (g − 2) µ anomaly, will entail some light sparticles and make the LHC constraints very tight. As a result, this scenario can explain the muon anomalous magnetic moment in very narrow corners of its parameter space.

show abstract

Section: Introductionsupporting

confidence: 58%

Impact of recent $(g-2)_μ$ measurement on the light CP-even Higgs scenario in general Next-to-Minimal Supersymmetric Standard Model

Cao,

Lian,

Pan

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…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: 97%

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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“…This new world average points to a 4.2σ deviation from the SM predictions [3][4][5]. The supersymmetric contributions to muon g − 2 arise from a number of super partners which couple to muon at tree-level [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. In order to solve this discrepancy, the SUSY electroweak sector should involve relatively light neutralinos, charginos and sleptons.…”

Section: Introductionmentioning

confidence: 99%

Muon g-2, Neutralino Dark Matter and Stau NLSP

Gomez,

Shafi,

Tiwari

et al. 2022

Preprint

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We explore the implications of resolving the muon g−2 anomaly in a SU (4) c ×SU (2) L × SU (2) R model, where the soft supersymmetry breaking scalar and gaugino masses break the left-right (LR) symmetry. A 2 σ resolution of the anomaly requires relatively light sleptons, chargino and LSP neutralino. The stau turns out to be the NLSP of mass m τ 400 GeV, and the sleptons from the first two families can be as heavy as about 800 GeV. The chargino is also required to be lighter than about 600 GeV to accommodate the muon g−2 solutions consistent with the dark matter relic density constraint. The dominant right-handed nature of the light slepton states suppress the sensitivity of possible signals which can be probed in Run3 experiments at the LHC. We also discuss the impact of accomodating the Higgs boson mass and the vacuum stability of the scalar potential for these solutions. The Higgsinos are heavier than about 4 TeV, and the LSP neutralino has the correct relic density if it is Bino-like. We identify stau-neutralino coannihilation as the dominant mechanism for realizing the desired dark matter relic density, with sneutrinoneutralino coannihiliation playing a minor role. These bino-like dark matter solutions can yield a spin-independent scattering cross-section on the order of 10 −3 pb which hopefully, can be expected to be tested in the near future.

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The tiny (g-2) muon wobble from small-μ supersymmetry

Cited by 49 publications

References 142 publications

Impact of recent $(g-2)_μ$ measurement on the light CP-even Higgs scenario in general Next-to-Minimal Supersymmetric Standard Model

Impact of recent $(g-2)_μ$ measurement on the light CP-even Higgs scenario in general Next-to-Minimal Supersymmetric Standard Model

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

Muon g-2, Neutralino Dark Matter and Stau NLSP

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