Hadronic contribution to g-2 from twisted mass fermions

Dru B. Renner; Xu Feng

Hadronic contribution to g-2 from twisted mass fermions

High Energy Physics - Lattice 2010-01-21 v1

Authors: Dru B. Renner , Xu Feng

Abstract

We calculate the vacuum polarization tensor for pion masses from 480 MeV to 270 MeV using dynamical twisted mass fermions at a lattice spacing of 0.086 fm. We analyze the form of the polarization tensor on the lattice using the symmetries of twisted QCD and we study both finite size effects and lattice artifacts at a pion mass of 310 MeV. Results for the lowest order hadronic contribution to g-2 are presented and the impact of systematic errors is discussed.

Keywords

g-2 hadronic contribution twisted mass fermions vacuum polarization tensor lattice QCD

Cite

@article{arxiv.0902.2796,
  title  = {Hadronic contribution to g-2 from twisted mass fermions},
  author = {Dru B. Renner and Xu Feng},
  journal= {arXiv preprint arXiv:0902.2796},
  year   = {2010}
}

Comments

talk presented at the XXVI International Symposium on Lattice Field Theory, July 14-19, 2008, Williamsburg, Virginia, USA

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