%0 Journal Article
%A Seng, Chien-Yeah
%A Galviz, Daniel
%A Gorchtein, Mikhail
%A Meißner, Ulf-G.
%T High-precision determination of the K3 radiative corrections
%J Physics letters / B
%V 820
%@ 0370-2693
%C Amsterdam
%I North-Holland Publ.
%M FZJ-2021-04424
%P 136522 -
%D 2021
%X We report a high-precision calculation of the Standard Model electroweak radiative corrections in the decay as a part of the combined theory effort to understand the existing anomaly in the determinations of . Our new analysis features a chiral resummation of the large infrared-singular terms in the radiative corrections and a well-under-control strong interaction uncertainty based on the most recent lattice QCD inputs. While being consistent with the current state-of-the-art results obtained from chiral perturbation theory, we reduce the existing theory uncertainty from to . Our result suggests that the Standard Model electroweak effects cannot account for the anomaly.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000713124400011
%R 10.1016/j.physletb.2021.136522
%U https://juser.fz-juelich.de/record/902629