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Pion distribution amplitude from Euclidean correlation functions: Exploring universality and higher-twist effects

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Bali, Gunnar S. ; Braun, Vladimir M. ; Gläßle, Benjamin ; Göckeler, Meinulf ; Gruber, Michael ; Hutzler, Fabian ; Korcyl, Piotr ; Schäfer, Andreas ; Wein, Philipp ; Zhang, Jian-Hui
Date of publication of this fulltext: 14 Feb 2019 10:58


Building upon our recent study [G. S. Bali et al., Eur. Phys. J. C 78, 217 (2018)], we investigate the feasibility of calculating the pion distribution amplitude from suitably chosen Euclidean correlation functions at large momentum. We demonstrate in this work the advantage of analyzing several correlation functions simultaneously and extracting the pion distribution amplitude from a global fit. ...


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