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PreprintarXiv licencearXiv

Two-Loop Anomalous Dimension for Non-Global and Clustering Logarithms

  • Thomas Becher
  • Jürg Haag
  • Nicolas Schalch
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Abstract

We derive the two-loop anomalous dimension relevant for the resummation of subleading non-global and, for the first time, also clustering logarithms within the framework of effective field theory. Special emphasis is put on the choice of the renormalization scheme. We show that the modified minimal subtraction scheme is problematic since it requires extra dimensions to set up the parton shower to perform the resummation. We discuss a set of modified dipole subtraction schemes which are free from this complication and can be used to obtain a frame-independent result for the renormalization-group evolution. We implement the leading-color limit of our result in the Marzili framework and numerically verify the scheme independence for gap-between-jets cross sections.

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Cite

BibTeXRIS
BibTeX
@misc{becher2026twoloop,
  title = {{Two-Loop Anomalous Dimension for Non-Global and Clustering Logarithms}},
  author = {Thomas Becher and Jürg Haag and Nicolas Schalch},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.09104},
  eprint = {2609.09104},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.09104},
}
RIS
TY  - UNPB
TI  - Two-Loop Anomalous Dimension for Non-Global and Clustering Logarithms
AU  - Thomas Becher
AU  - Jürg Haag
AU  - Nicolas Schalch
PY  - 2026
DA  - 2026/09/08
PB  - arXiv
DO  - 10.48550/arxiv.2609.09104
UR  - https://arxiv.org/abs/2609.09104
AB  - We derive the two-loop anomalous dimension relevant for the resummation of subleading non-global and, for the first time, also clustering logarithms within the framework of effective field theory. Special emphasis is put on the choice of the renormalization scheme. We show that the modified minimal subtraction scheme is problematic since it requires extra dimensions to set up the parton shower to perform the resummation. We discuss a set of modified dipole subtraction schemes which are free from this complication and can be used to obtain a frame-independent result for the renormalization-group evolution. We implement the leading-color limit of our result in the Marzili framework and numerically verify the scheme independence for gap-between-jets cross sections.
ER  -