TY  - JOUR
AU  - Falcioni, G.
AU  - Herzog, F.
AU  - Moch, S.
AU  - Van Thurenhout, Sam
TI  - Constraints for twist-two alien operators in QCD
JO  - Journal of high energy physics
VL  - 11
IS  - 11
SN  - 1126-6708
CY  - Heidelberg
PB  - Springer
M1  - PUBDB-2024-05107
M1  - DESY-24-108
M1  - arXiv:2409.02870
M1  - ZU-TH 43/24
SP  - 080
PY  - 2024
N1  - 28 pages, LaTex, 4 figures, all-N results in ancillary Mathematica file, journal version
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)16
UR  - <Go to ISI:>//WOS:001354776500002
DO  - DOI:10.1007/JHEP11(2024)080
UR  - https://bib-pubdb1.desy.de/record/611893
ER  -