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Novel quark smearing for hadrons with high momenta in lattice QCD

Bali, Gunnar S. ; Lang, Bernhard ; Musch, Bernhard U. ; Schäfer, Andreas



Abstract

Hadrons in lattice QCD are usually created employing smeared interpolators. We introduce a new quark smearing that allows us to maintain small statistical errors and good overlaps of hadronic wave functions with the respective ground states, also at high spatial momenta. The method is successfully tested for the pion and the nucleon at a pion mass m(pi) approximate to 295 MeV and momenta as high ...

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