English

Non-perturbative renormalization of tensor bilinears in Schr\"odinger Functional schemes

High Energy Physics - Lattice 2015-11-26 v2

Abstract

We present preliminary result for the study of the renormalization group evolution of tensor bilinears in Schr\"odinger Functional (SF) schemes for Nf=0N_f=0 and Nf=2N_f=2 QCD with non-perturbatively O(a)\mathcal{O}(a)-improved Wilson fermions. First Nf=2+1N_f=2+1 results (proceeding in parallel with the ongoing computation of the running quark masses [1] are also discussed. A one-loop perturbative calculation of the discretisation effects for the relevant step scaling functions has been carried out for both Wilson and O(a)\mathcal{O}(a)-improved actions and for a large number of lattice resolutions. We also calculate the two-loop anomalous dimension in SF schemes for tensor currents through a scheme matching procedure with RI and MS\overline{\rm MS}. Thanks to the SF iterative procedure the non-perturbative running over two orders of magnitude in energy scales, as well as the corresponding Renormalization Group Invariant operators, have been determined.

Keywords

Cite

@article{arxiv.1511.05024,
  title  = {Non-perturbative renormalization of tensor bilinears in Schr\"odinger Functional schemes},
  author = {Patrick Fritzsch and Carlos Pena and David Preti},
  journal= {arXiv preprint arXiv:1511.05024},
  year   = {2015}
}

Comments

7 pages, 4 figures. Proceedings of the 33rd International Symposium on Lattice Field Theory, 14-18 July 2015, Kobe, Japan