A ug 2 00 9 Renormalization of Twist-Four Operators in QCD

Abstract

Extending the work by Bukhvostov, Frolov, Lipatov and Kuraev (BFLK) on the renor-malization of quasipartonic operators we derive a complete set of two-particle renormal-ization group kernels that enter QCD evolution equations to twist-four accuracy. It is shown that the 2 → 2 evolution kernels which involve " non-partonic " components of field operators… (More)

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