English

Anomalous dimension of subleading-power ${N}$-jet operators II

High Energy Physics - Phenomenology 2018-12-05 v1 High Energy Physics - Theory

Abstract

We continue the investigation of the anomalous dimension of subleading-power NN-jet operators. In this paper, we focus on the operators with fermion number one in each collinear direction, corresponding to quark (antiquark) initiated jets in QCD. We investigate the renormalization effects induced by the soft loop and compute the one-loop mixing of time-ordered products involving power-suppressed SCET Lagrangian insertions into NN-jet currents through soft loops. We discuss fermion number conservation in collinear directions and provide explicit results for the collinear anomalous dimension matrix of the currents. The Feynman rules for the power-suppressed SCET interactions in the position-space formalism are collected in an appendix.

Keywords

Cite

@article{arxiv.1808.04742,
  title  = {Anomalous dimension of subleading-power ${N}$-jet operators II},
  author = {Martin Beneke and Mathias Garny and Robert Szafron and Jian Wang},
  journal= {arXiv preprint arXiv:1808.04742},
  year   = {2018}
}

Comments

44 pages + appendices