Speaker
Nils Hermansson-Truedsson
(Universität Bern)
Description
The recently observed 4.2-$\sigma$ tension between experimental measurement and theoretical prediction of the muon magnetic moment highlights the need for improved control of uncertainties. On the theoretical side, one of the contributions of interest is the hadronic light-by-light (HLbL). In the dispersive data-driven evaluation of the HLbL, certain short-distance constraints obtained by means of operator product expansion techniques play a central role, as explained thoroughly in the white paper [2006.04822]. In this talk, we will present previous work [1908.03331,2008.13487,2101.09169] and on-going efforts on such constraints for different kinematical regions occurring in the HLbL loop-integrations, and their impact on the muon g-2.
Primary authors
Nils Hermansson-Truedsson
(Universität Bern)
Prof.
Johan Bijnens
(Lund University)
Dr
Antonio Rodríguez-Sánchez
(Université Paris-Saclay, CNRS/IN2P3, IJCLab)
