Pion and Kaon Distribution Amplitudes from lattice QCD: towards the continuum limit
arXiv:1811.06050
Abstract
We present the current status of a non-perturbative lattice calculation of the moments of the pion and kaon distribution amplitudes by the RQCD collaboration. Our investigation is carried out using 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 by excited states and increase statistical precision.
arXiv commentProceedings of the 36th Annual International Symposium on Lattice Field Theory - LATTICE2018
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