Muon g-2 and New Physics

TL;DR

This paper explores how current and future muon g-2 measurements can provide insights into new physics models addressing the hierarchy problem, focusing on TeV-scale gravity and supersymmetry.

Contribution

It analyzes the impact of two specific models—TeV-scale gravity and supersymmetry—on muon g-2 predictions, considering experimental constraints.

Findings

TeV-scale gravity significantly alters muon g-2 predictions.

Supersymmetric models can also produce notable deviations in muon g-2.

Precision measurements up to the Z boson mass constrain these models.

Abstract

Here we invoke the current and future perspective on muon $g-2$ measurement when asking what the muon $g-2$ could tell about the underlying structure concerning with the hierarchy problem. Here we take up two such models, the presence of which turns out to alter the standard model prediction for muon $g-2$ significantly: one is TeV scale gravity scenario, the other supersymmetric model, in the latter case of which the precision measurement up to $Z$ boson mass is taken into account as an explicit constraint.