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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: aπ2=0.101+24−24 for the pion; aK1=0.0533+34−35 and aK2=0.090+19−20 for the kaon. The calculation is carried out on 35 different CLS ensembles with Nf = 2 + 1 flavors of dynamical Wilson-clover fermions. These cover a ...

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