Electromagnetic Contributions to Lepton g-2 in a Thick Brane-World
R. Casadio, A. Gruppuso, G. Venturi
TL;DR
This paper investigates how electromagnetic effects from a thick brane-world scenario influence the anomalous magnetic moments of electrons and muons, providing constraints on the brane's properties based on these corrections.
Contribution
It introduces a model for electromagnetic corrections to lepton g-2 in a thick brane-world and estimates bounds on the brane's thickness from these effects.
Findings
Electromagnetic corrections can significantly affect lepton g-2 values.
Constraints on the mass of excited states imply limits on brane thickness.
Results are consistent with current experimental measurements.
Abstract
We consider Standard Model fields living inside a thick four dimensional flat brane embedded in a (possibly warped) five dimensional space-time and estimate the electromagnetic corrections to the anomalous magnetic moment (g-2) of the electron and muon by including virtual massive fermion and gauge boson states. Constraints on the mass of the ``excited'' states (or thickness of the brane-world) are obtained.
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