Speaker
Mr
Tian Lin
(School of Physics, Peking University)
Description
In this study we develop a novel method for computing the pion pole's contribution to hadronic light-by-light in the absence of a parametrization of the pion transition form factor. By introducing a pion structure function and performing the gegenbauer expansion, we demonstrate that the majority of the pion pole's contribution can be extracted in a model-independent manner.
The calculation is carried out using five ensembles generated with 2+1 flavor domain wall fermions at the physical pion mass. After performing a continuum extrapolation and analyzing systematic effects, we obtain the final result $a_{\mu}^{\pi^0\text{-pole}}=(58.3\pm 2.3)\times 10^{-11}$.
Primary author
Mr
Tian Lin
(School of Physics, Peking University)
