Double parton distributions in the nucleon from lattice QCD

URN to cite this document:: urn:nbn:de:bvb:355-epub-517404
DOI to cite this document:: 10.5283/epub.51740

Bali, Gunnar S. ; Diehl, Markus ; Gläßle, Benjamin ; Schäfer, Andreas ; Zimmermann, Christian

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Date of publication of this fulltext: 20 Feb 2022 14:26

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Abstract

We evaluate nucleon four-point functions in the framework of lattice QCD in order to extract the first Mellin moment of double parton distributions (DPDs) in the unpolarized proton. In this first study, we employ an n(f) = 2+1 ensemble with pseudoscalar masses of m(pi) = 355 MeV and m(K) = 441 MeV. The results are converted to the scale mu = 2 GeV. Our calculation includes all Wick contractions, ...