αs from the Hadronic Vacuum Polarisation
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
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Published online: 26 March 2018
We present our result for the strong coupling constant computed from the u-d vector Hadronic Vacuum Polarisation function. We use nf = 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
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