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Operator product expansion of the non-local gluon condensate

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Braun, V. M. ; Chetyrkin, K. G. ; Kniehl, B. A.
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 20 Feb 2022 15:18


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 ...


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