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Kaon distribution amplitude from lattice QCD and the flavor SU(3) symmetry

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Zhang, Rui ; Chen, Jiunn-Wei ; Jin, Luchang ; Lin, Huey-Wen ; Schäfer, Andreas ; Sun, Peng ; Yang, Yi-Bo ; Zhang, Jian-Hui ; Zhao, Yong
Date of publication of this fulltext: 14 Feb 2019 09:27


We present the first lattice-QCD calculation of the kaon distribution amplitude using the large-momentum effective theory (LaMET) approach. The momentum-smearing technique has been implemented to improve signals at large meson momenta. We subtract the power divergence due to Wilson line to high precision using multiple lattice spacings. The kaon structure clearly shows an asymmetry of the ...


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