Leptophilic U(1) Massive Vector Bosons from Large Extra Dimensions

Abstract

We demonstrate that the discrepancy between the anomalous magnetic moment measured at BNL and Fermilab and the Standard Model prediction could be explained within the context of low-scale gravity and large extra-dimensions. The dominant contribution to $(g-2{)}_{\mu }$ originates in Kaluza-Klein (KK) excitations (of the lepton gauge boson) which do not mix with quarks (to lowest order) and therefore can be quite light avoiding LHC constraints. We show that the KK contribution to $(g-2{)}_{\mu }$ is universal with the string scale entering as an effective cutoff. The KK tower provides a unequivocal distinctive signal which will be within reach of the future muon smasher.

Matching journal version; addendum in arXiv:2110.01247

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• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• Search for resonant and nonresonant new phenomena in high-mass dilepton final states at $\sqrt{s}=$ 13 TeV
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Cited by in corpus (7)

• The landscape of promising non-supersymmetric string models
• The Muon Magnetic Moment and Physics Beyond the Standard Model
• Minimal embedding of the Standard Model into intersecting D-brane configurations with a bulk leptonic $U(1)$
• Leptophilic U(1) Massive Vector Bosons from Large Extra Dimensions: Reexamination of Constraints from LEP Data
• Light stringy states and the $g-2$ of the muon
• Constraints on antisymmetric tensor fields from Bhabha scattering
• Anomalous $U(1)$ extension of the Standard Model