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Second moment of the pion distribution amplitude with the momentum smearing technique

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Bali, G. S. ; Braun, V. M. ; Göckeler, M. ; Gruber, M. ; Hutzler, F. ; Korcyl, P. ; Lang, B. ; Schäfer, A.
Date of publication of this fulltext: 27 Apr 2018 09:32


Using the second moment of the pion distribution amplitude as an example, we investigate whether lattice calculations of matrix elements of local operators involving covariant derivatives may benefit from the recently proposed momentum smearing technique for hadronic interpolators. Comparing the momentum smearing technique to the traditional Wuppertal smearing we find-at equal computational ...


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