Muon g-2 vs LHC Run 2 in Supersymmetric Models

Abstract

Supersymmetric models with sub-TeV charginos and sleptons have been a candidate for the origin of the long-standing discrepancy in the muon anomalous magnetic moment (g-2). By gathering all the available LHC Run 2 results, we investigate the latest LHC constraints on models that explain the anomaly by their chargino contribution to the muon g-2. It is shown that the parameter regions where sleptons are lighter than charginos are strongly disfavored. In contrast, we find that the models with $m_{{\tilde{\mu }}_{\mathrm{L}}}\gtrsim m_{{\tilde{\chi }}_1^{\pm }}$ are still widely allowed, where the lighter chargino dominantly decays into a W-boson and a neutralino.

35 pages, 14 figures; 2021 Spring Update with the latest LHC and g-2 data

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• Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb${}^{-1}$ of $\sqrt{s}$ =13 TeV $pp$ collision data with the ATLAS detector
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• Threshold Resummation for Slepton-Pair Production at Hadron Colliders
• The Relic Neutralino Surface at a 100 TeV collider
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• Search for new physics in final states with two opposite-sign, same-flavor leptons, jets, and missing transverse momentum in pp collisions at sqrt(s) = 13 TeV
• Search for supersymmetry with a compressed mass spectrum in events with a soft $\tau$ lepton, a highly energetic jet, and large missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for direct production of electroweakinos in final states with missing transverse momentum and a Higgs boson decaying into photons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
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• Supersymmetric Interpretation of the Muon $g-2$ Anomaly
• Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• The new "MUON G-2" Result and Supersymmetry
• GUT-constrained supersymmetry and dark matter in light of the new $(g-2{)}_{\mu }$ determination
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• Unveiling Hidden Physics at the LHC
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• Wino-Higgsino dark matter in the MSSM from the $g-2$ anomaly
• Vector-Like Leptons and Inert Scalar Triplet: Lepton Flavor Violation, $g-2$ and Collider Searches
• The new $(g-2{)}_{\mu }$ result and the $\mu \nu$SSM
• Muon $g-2$ in Gauge Mediation without SUSY CP Problem
• Supersymmetric explanation of the muon g-2 anomaly with and without stable neutralino
• Electroweakino searches at the HL-LHC in the baryon number violating MSSM
• LFV and g-2 in non-universal SUSY models with light higgsinos
• The Muon Magnetic Moment and Physics Beyond the Standard Model
• Lepton flavor violations in SUSY models for muon $g-2$ with right-handed neutrinos
• The mass-degenerate SM-like Higgs and anomaly of $(g-2{)}_{\mu }$ in $\mu$-term extended NMSSM
• Search for cascade decays of charged sleptons and sneutrinos in final states with three leptons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Supersymmetric Alignment Models for $(g-2{)}_{\mu }$