We study a representation of the hadronic vacuum polarization based on the time-momentum representation of the vector correlator. This representation suggests a way to compute the hadronic vacuum polarization and the associated Adler function for any value of virtuality, irrespective of the flavor structure of the current. We present results on both of these phenomenologically important functions, derived from local-conserved two-point lattice vector correlation functions, computed on a subset of light two-flavor ensembles made available to us through the CLS effort.
@article{arxiv.1311.3285,
title = {Adler function and hadronic vacuum polarization from lattice vector correlators},
author = {Anthony Francis and Benjamin Jäger and Harvey B. Meyer and Hartmut Wittig},
journal= {arXiv preprint arXiv:1311.3285},
year = {2013}
}
Comments
7 pages, 3 figures, presented at "The 31st International Symposium on Lattice Field Theory" (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany