Title
| Non-perturbative renormalization of the flavour singlet local vector current with O(a)-improved Wilson fermions |
Author(s)
| Bresciani, Matteo (Milan Bicocca U. ; INFN, Milan Bicocca) ; Dalla Brida, Mattia (CERN) ; Giusti, Leonardo (Milan Bicocca U. ; INFN, Milan Bicocca) ; Pepe, Michele (INFN, Milan Bicocca) ; Rapuano, Federico (Milan Bicocca U. ; INFN, Milan Bicocca) |
Publication
| 2022 |
Number of pages
| 8 |
In:
| PoS LATTICE2021 (2022) 421 |
In:
| 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.421 |
DOI
| 10.22323/1.396.0421
|
Subject category
| Particle Physics - Phenomenology ; Particle Physics - Lattice |
Abstract
| We determine non-perturbatively the renormalization constant of the flavour singlet
local vector current with O(a)-improved Wilson fermions. The renormalization constant is fixed by comparing the expectation values (one-point function) of the local vector current and of the conserved one in thermal QCD in a moving reference frame with a non-zero
imaginary chemical potential and in the chiral limit. We implement the method in QCD with 3 flavours discretized by the standard Wilson action for gluons and the non-perturbatively O(a)-improved Wilson fermions. By carrying out extensive numerical simulations, the
renormalization constant is determined with a permille precision for values of the bare coupling constant in the range 0.52≤g20≤1.13. |
Copyright/License
| © 2022-2025 The author(s) (License: CC-BY-NC-ND-4.0) |