TY  - EJOUR
AU  - Falcioni, G.
AU  - Herzog, F.
AU  - Moch, S.
AU  - Van Thurenhout, Sam
TI  - Constraints for twist-two alien operators in QCD
IS  - arXiv:2409.02870
M1  - PUBDB-2025-01306
M1  - arXiv:2409.02870
M1  - ZU-TH 43/24
M1  - DESY-24-108
PY  - 2024
N1  - DFG through the Research Unit FOR 2926, Next Generation pQCD for Hadron Structure: Preparing for the EIC, project number 40824754, DFG grant MO 1801/4-2, the ERC Advanced Grant 101095857 Conformal-EIC;
AB  - Parton evolution equations in QCD are controlled by the anomalous dimensions of gauge-invariant twist-two spin-N quark and gluon operators. Under renormalization, these mix with gauge-variant operators of the same quantum numbers, referred to as alien operators. Our work addresses the systematic study of these alien operators at arbitrary spin N, using generalized BRST symmetry relations to derive their couplings and Feynman rules at all values of N. We observe how the all-N structure of the generalized (anti-)BRST constraints relates the couplings of alien operators with n + 1 gluons to those with n gluons. Realizing a bootstrap, we present all one-loop results necessary for performing the operator renormalization up to four loops in QCD.
KW  - Higher-Order Perturbative Calculations (autogen)
KW  - Parton Distributions (autogen)
KW  - Renormalization and Regularization (autogen)
LB  - PUB:(DE-HGF)25
DO  - DOI:10.3204/PUBDB-2025-01306
UR  - https://bib-pubdb1.desy.de/record/626115
ER  -