Isospin Breaking Corrections to the HVP with Domain Wall Fermions

Peter Boyle; Vera Guelpers; James Harrison; Andreas Juettner; Christoph Lehner; Antonin Portelli; Christopher Sachrajda

doi:10.1051/epjconf/201817506024

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Proceedings

Open Access

EPJ Web of Conferences 175, 06024 (2018)
https://doi.org/10.1051/epjconf/201817506024

Isospin Breaking Corrections to the HVP with Domain Wall Fermions

Peter Boyle¹, Vera Guelpers²^*, James Harrison², Andreas Juettner², Christoph Lehner³, Antonin Portelli¹ and Christopher Sachrajda²^,1

¹ School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
² School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom
³ Physics Department, Brookhaven National Laboratory, Upton, NY 11973, USA

^* Speaker, e-mail: V.M.Guelpers@soton.ac.uk

Published online: 26 March 2018

Abstract

We present results for the QED and strong isospin breaking corrections to the hadronic vacuum polarization using N_f = 2 + 1 Domain Wall fermions. QED is included in an electro-quenched setup using two different methods, a stochastic and a perturbative approach. Results and statistical errors from both methods are directly compared with each other.

© 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/).