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- W3203649753 abstract "The pion light-cone distribution amplitude (LCDA) is a central non-perturbative object of interest for high-energy exclusive processes in quantum chromodynamics. In this article, the second Mellin moment of the pion LCDA is determined as a proof-of-concept calculation for the first numerical implementation of the heavy-quark operator product expansion (HOPE) method. The resulting value for the second Mellin moment, determined in quenched QCD at a pion mass of $m_pi=550$ MeV at a factorization scale of 2 GeV is $ langle xi^2 rangle = 0.210 pm 0.013text{ (stat.)} pm 0.034text{ (sys.)}$. This result is compatible with those from previous determinations of this quantity." @default.
- W3203649753 created "2021-10-11" @default.
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- W3203649753 date "2022-02-10" @default.
- W3203649753 modified "2023-10-09" @default.
- W3203649753 title "Parton physics from a heavy-quark operator product expansion: Lattice QCD calculation of the second moment of the pion distribution amplitude" @default.
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- W3203649753 doi "https://doi.org/10.1103/physrevd.105.034506" @default.
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