Update of g-2 of the muon and Delta alpha

TL;DR

This paper updates the Standard Model predictions for the muon g-2 and the hadronic contributions to the QED coupling's running, incorporating recent experimental data to refine these fundamental quantities.

Contribution

It provides an updated calculation of muon g-2 and Delta alpha, emphasizing recent data changes in the 2pi channel and below 2 GeV energy region.

Findings

Refined Standard Model prediction for muon g-2.

Updated hadronic contribution estimates from new data.

Implications for precision tests of the Standard Model.

Abstract

We update our Standard Model predictions for g-2 of the muon and for the hadronic contributions to the running of the QED coupling, Delta alpha^5_had(M_Z^2). Particular emphasis is put on recent changes in the hadronic contributions from new data in the 2pi channel and from the energy region just below 2 GeV.