NPR step-scaling across the charm threshold
High Energy Physics - Lattice
2014-12-03 v1
Abstract
Matching Non-Perturbative Renormalisation on the lattice and perturbative renormalisation would benefit from higher matching scales, which are needed for observables entering their permile era such as BK. In this work we lay down a strategy, within the Rome-Southampton framework, to push this scale higher across the charm threshold, and apply it to an exploration of the BK running from 3 GeV to 9 GeV. This is done on Nf = 2+1+1 ensembles generated by the RBC-UKQCD collaboration, and features a close study of the discretisation effects.
Cite
@article{arxiv.1412.0834,
title = {NPR step-scaling across the charm threshold},
author = {Julien Frison and Peter Boyle and Nicolas Garron},
journal= {arXiv preprint arXiv:1412.0834},
year = {2014}
}
Comments
talk presented at Lattice 2014, the 32nd International Symposium on Lattice Field Theory, 23-28 June, 2014, Columbia University New York, NY