Speaker
Dr
Piotr Korcyl
(Jagiellonian University and University of Regensburg)
Description
We present the current status of a non-perturbative lattice calculation of the pion distribution amplitude by the RQCD collaboration. Our investigation is carried out using $N_f=2+1$ dynamical, non-perturbatively O(a)-improved Wilson fermions on the CLS ensembles with 5 different lattice spacings and pion masses down to the physical pion mass. A combined continuum and chiral extrapolation to the physical point is performed along two independent quark mass trajectories simultaneously. We employ momentum smearing in order to decrease the contamination of excited states and increase statistical precision.
Primary authors
Mr
Fabian Hutzler
(University of Regensburg)
Mr
Michael Gruber
(University of Regensburg)
Dr
Philipp Wein
(Universität Regensburg)
Dr
Piotr Korcyl
(Jagiellonian University and University of Regensburg)