Nucleon matrix elements with $N_f=2+1+1$ maximally twisted fermions

Simon Dinter; Constantia Alexandrou; Martha Constantinou; Vincent Drach; Karl Jansen; Dru Renner

Nucleon matrix elements with $N_f=2+1+1$ maximally twisted fermions

High Energy Physics - Lattice 2015-03-18 v1

Authors: Simon Dinter , Constantia Alexandrou , Martha Constantinou , Vincent Drach , Karl Jansen , Dru Renner

Abstract

We present the first lattice calculation of nucleon matrix elements using four dynamical flavors. We use the $N_f=2+1+1$ maximally twisted mass formulation. The renormalization is performed non-perturbatively in the RI $^\prime$ -MOM scheme and results are given for the vector and axial vector operators with up to one-derivative. Our calculation of the average momentum of the unpolarized non-singlet parton distribution is presented and compared to our previous results obtained from the $N_f=2$ case.

Keywords

lattice QCD nucleon matrix elements maximally twisted fermions renormalization parton distribution non-perturbative

Cite

@article{arxiv.1101.5540,
  title  = {Nucleon matrix elements with $N_f=2+1+1$ maximally twisted fermions},
  author = {Simon Dinter and Constantia Alexandrou and Martha Constantinou and Vincent Drach and Karl Jansen and Dru Renner},
  journal= {arXiv preprint arXiv:1101.5540},
  year   = {2015}
}

Comments

7 pages, 6 figures. Talk given at the XXVIII International Symposium on Lattice Field Theory, June 14-19, 2010, Villasimius, Sardinia Italy

Nucleon matrix elements with $N_f=2+1+1$ maximally twisted fermions

Abstract

Keywords

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