arXiv:1910.06759·v1·High Energy Physics — Lattice
Non-perturbative renormalization of O(a) improved tensor currents
Leonardo Chimirri (1)🇩🇪 · Patrick Fritzsch (2)🇨🇭 · Jochen Heitger (3)🇩🇪 · Fabian Joswig (3)🇩🇪 · Marco Panero (4 and 5)🇮🇹 · Carlos Pena (6)🇪🇸 · David Preti (5) ((1) DESY Zeuthen, (2) CERN, (3) U. Muenster, (4) U. Turin, (5) INFN Turin, (6) Autonoma U. Madrid)🇮🇹
Abstract
We present our progress in the non-perturbative O(a) improvement and renormalization of tensor currents in three-flavor lattice QCD with Wilson-clover fermions and tree-level Symanzik improved gauge action. The mass-independent O(a) improvement factor of tensor currents is determined via a Ward identity approach, and their renormalization group running is calculated via recursive finite-size scaling techniques, both implemented within the Schrödinger functional framework. We also address the matching factor between bare and renormalization group invariant currents for a range of lattice spacings < 0.1 fm, relevant for phenomenological large-volume lattice QCD applications.
Comments: 7 pages including 6 figures, latex2e; Proceedings of the 37th International Symposium on Lattice Field Theory (Lattice 2019), 16-22 June 2019, Wuhan, China