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Pion distribution amplitude from lattice QCD

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Zhang, Jian-Hui ; Chen, Jiunn-Wei ; Ji, Xiangdong ; Jin, Luchang ; Lin, Huey-Wen
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Date of publication of this fulltext: 20 Mar 2019 12:55


We present the first lattice-QCD calculation of the pion distribution amplitude using the large-momentum effective field theory (LaMET) approach, which allows us to extract light cone parton observables from a Euclidean lattice. The mass corrections needed to extract the pion distribution amplitude from this approach are calculated to all orders in m(pi)(2)/P-Zeta(2) . We also implement the ...


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