2 papers
hep-lat2021
Investigating axial matrix elements
Lorenzo Barca, Gunnar S. Bali, Sara Collins
Excited state contamination is one of the most challenging sources of systematics to tackle in the determination of nucleon matrix elements and form factors. The signal-to-noise pr…
hep-lat2019
Nucleon axial structure from lattice QCD
Gunnar S. Bali, Lorenzo Barca, Sara Collins +7
We present a new analysis method that allows one to understand and model excited state contributions in observables that are dominated by a pion pole. We apply this method to extra…