αs from the Hadronic Vacuum Polarisation

Renwick Hudspith; Randy Lewis; Kim Maltman; Eigo Shintani

doi:10.1051/epjconf/201817510006

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 175, 10006 (2018)
https://doi.org/10.1051/epjconf/201817510006

α_s from the Hadronic Vacuum Polarisation

Renwick Hudspith¹^*, Randy Lewis¹, Kim Maltman²^,3 and Eigo Shintani⁴

¹ Dept. of Physics and Astronomy, York University, Toronto, Ontario, M3J 1P3, Canada
² Dept. of Mathematics and Statistics, York University, Toronto, Ontario, M3J 1P3, Canada
³ CSSM, University of Adelaide, Adelaide SA 5005, Australia
⁴ RIKEN Advanced Institute for Computational Science, Kobe, Hyogo 650-0047, Japan

^* Speaker e-mail: renwick.james.hudspith@gmail.com

Published online: 26 March 2018

Abstract

We present our result for the strong coupling constant computed from the u-d vector Hadronic Vacuum Polarisation function. We use n_f = 2 + 1 flavours of Domain Wall fermions at 3 lattice spacings, generated by the RBC-UKQCD collaboration. We identify several possible pitfalls in this method for determining the coupling and illustrate how to resolve them.

© The Authors, published by EDP Sciences, 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).