English

Renormalization Group Evolution from On-shell SMEFT

High Energy Physics - Phenomenology 2021-02-03 v2 High Energy Physics - Theory

Abstract

We describe the on-shell method to deriving the Renormalization Group (RG) evolution of Wilson coefficients of high dimensional operators at one loop, which is a necessary part in the on-shell construction of the Standard Model Effective Field Theory (SMEFT), and exceptionally efficient based on the amplitude basis in hand. The UV divergence is obtained by firstly calculating the coefficients of scalar bubble integrals by unitary cuts, then subtracting the IR divergence in the massless bubbles, which can be easily read from the collinear factors we obtained for the Standard Model fields. Examples of deriving the anomalous dimensions at dimension six are presented in a pedagogical manner. We also give the results of contributions from the dimension-8 H4D4H^4D^4 operators to the running of V+VH2V^+V^-H^2 operators, as well as the running of B+BH2D2nB^+B^-H^2D^{2n} from H4D2n+4H^4D^{2n+4} for general nn.

Keywords

Cite

@article{arxiv.2005.10261,
  title  = {Renormalization Group Evolution from On-shell SMEFT},
  author = {Minyuan Jiang and Teng Ma and Jing Shu},
  journal= {arXiv preprint arXiv:2005.10261},
  year   = {2021}
}

Comments

19 page, 2 figures

R2 v1 2026-06-23T15:41:49.321Z