Sep 5 – 10, 2021
Online
Europe/Lisbon timezone

Short-distance constraints in hadronic-light-by-light for the muon $g-2$

Sep 5, 2021, 4:15 PM
20m
Online

Online

Talk Tests of symmetries and conservation laws Tests of symmetries and conservation laws

Speaker

Prof. Johan Bijnens (Lund University)

Description

We have made recent progress in studying the short-distance properties of the hadronic light-by-light contribution to the muon $g-2$. The intermediate and short-distance part is a major contributor to the error of the hteoretical prediction, see the white paper [arxiv:2006.04822, Physics Reports 887 (2020) 1-166]. We have recently shown that the massless quark-loop is the first term in a systematic expansion at short-distance [arxiv:1908.03331, Phys.Lett. B798 (2019) 134994].This result already helped in the white paper in bringing down the error. Since then we have shown that both nonperturbative [arxiv:2008.13487, JHEP 10 (2020) 203] and the perturbative corrections [arxiv:2101.09169, JHEP 04 (2021) 240] are under control. The talk will describe these developments and how they fit in the total theopretical prediction for the muon $g-2$.

Primary author

Prof. Johan Bijnens (Lund University)

Co-authors

Presentation materials