TY  - JOUR
AU  - Seng, Chien-Yeah
AU  - Galviz, Daniel
AU  - Gorchtein, Mikhail
AU  - Meißner, Ulf-G.
TI  - High-precision determination of the K3 radiative corrections
JO  - Physics letters / B
VL  - 820
SN  - 0370-2693
CY  - Amsterdam
PB  - North-Holland Publ.
M1  - FZJ-2021-04424
SP  - 136522 -
PY  - 2021
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000713124400011
DO  - DOI:10.1016/j.physletb.2021.136522
UR  - https://juser.fz-juelich.de/record/902629
ER  -