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Light-cone distribution amplitudes of pseudoscalar mesons from lattice QCD

URN to cite this document:
urn:nbn:de:bvb:355-epub-454931
DOI to cite this document:
10.5283/epub.45493
Bali, Gunnar S. ; Braun, Vladimir M. ; Bürger, Simon ; Göckeler, Meinulf ; Gruber, Michael ; Hutzler, Fabian ; Korcyl, Piotr ; Schäfer, Andreas ; Sternbeck, André ; Wein, Philipp
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Date of publication of this fulltext: 06 Apr 2021 12:36



Abstract

We present the first lattice determination of the two lowest Gegenbauer moments of the leading-twist pion and kaon light-cone distribution amplitudes with full control of all errors: a(2)(pi) = 0.101(-24)(+24) for the pion; a(1)(K) = 0.0533(-34)(+34) and a(2)(K) = 0.090(-19)(+19) for the kaon. The calculation is carried out on 35 different CLS ensembles with N-f = 2 + 1 flavors of dynamical ...

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