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• W3136158740 abstract "Parton distribution functions (PDFs) and light-cone distribution amplitudes (LCDAs) are central non-perturbative objects of interest in high-energy inelastic and elastic scattering, respectively. As a result, an ab-initio determination of these objects is highly desirable. In this paper we present theoretical details for the calculation of the PDFs and LCDAs using a heavy-quark operator product expansion method. This strategy was proposed in a previous paper [Phys. Rev. D 73, 014501 (2006)] for computing higher moments of the PDFs using lattice QCD. Its central feature is the introduction of a fictitious, valence heavy quark. In the current article, we show that the operator product expansion (OPE) of the hadronic matrix element we study can also be expressed as the convolution of a perturbative matching kernel and the corresponding light-cone distribution, which in principle can be inverted to determine the parton momentum fraction dependence. Regarding the extraction of higher moments, this work also provides the one-loop Wilson coefficients in the OPE formulas for the unpolarized PDF, helicity PDF and pseudo-scalar meson LCDAs. Although these Wilson coefficients for the PDFs can be inferred from existing results in the literature, those for the LCDAs are new." @default.
• W3136158740 created "2021-03-29" @default.
• W3136158740 creator A5003383748 @default.
• W3136158740 creator A5011931280 @default.
• W3136158740 creator A5016867013 @default.
• W3136158740 creator A5034256542 @default.
• W3136158740 creator A5051155209 @default.
• W3136158740 creator A5076345208 @default.
• W3136158740 date "2021-10-14" @default.
• W3136158740 modified "2023-10-15" @default.
• W3136158740 title "Parton physics from a heavy-quark operator product expansion: Formalism and Wilson coefficients" @default.
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