Operator product expansion of the non-local gluon condensate

URN to cite this document:: urn:nbn:de:bvb:355-epub-517503
DOI to cite this document:: 10.5283/epub.51750

Braun, V. M. ; Chetyrkin, K. G.

; Kniehl, B. A.

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Date of publication of this fulltext: 20 Feb 2022 15:18

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Abstract

We consider the short-distance expansion of the product of two gluon field strength tensors connected by a straight-line-ordered Wilson line. The vacuum expectation value of this nonlocal operator is a common object in studies of the QCD vacuum structure, whereas its nucleon expectation value is known as the gluon quasi-parton distribution and is receiving a lot of attention as a tool to extract ...