The 39th International Symposium on Lattice Field Theory (Lattice 2022)

RG-running of the tensor currents for Nf= 3 QCD in a χSF setup

11 Aug 2022, 12:10

20m

CP1-HSZ/0.002 (CP1-HSZ) - HS4 (CP1-HSZ)

Oral Presentation Standard Model Parameters Standard Model Parameters

Speaker

Ludovica Pirelli (INFN & Università Tor Vergata)

Description

We perform the complete non-perturbative running of the flavour non-singlet
tensor operator from hadronic to elecroweak scales in $N_f$= 3
massless QCD, comparing four different definitions of the renormalisation
constant. We use the same configuration ensembles of arXiv:1802.05243,
subject to Schrödinger Functional (SF) boundary conditions, whereas
we use valence quarks with ($\chi$SF) boundary conditions, which
results in $O(a)$ improvement for observables after tuning of boundary
counterterms. Following the recent ALPHA strategy, we exploit two
different running couplings: at high energies ($\mu$ $>\sim$2GeV)
we use a SF-type coupling, while at low energies ($\mu$ $<\sim$2GeV)
a Gradient Flow (GF)-type coupling.

Presentation materials

lattice2022_ludovica_last.pdf

lattice2022_ludovica.pdf