Karlsruhe 2011 – scientific programme
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T: Fachverband Teilchenphysik
T 23: Gittereichtheorie I
T 23.6: Talk
Monday, March 28, 2011, 18:00–18:15, 30.23: 10-1
Nucleon Matrix Elements with Nf=2+1+1 Maximally Twisted Fermions — •Simon Dinter1, Constantia Alexandrou2,3, Martha Constatinou2, Vincent Drach1, Karl Jansen1, and Dru Renner4 — 1NIC, DESY, Platanenallee 6, 15738 Zeuthen — 2Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus — 3Computation-based Science and Technology Research Center, The Cyprus Institute, 15 Kypranoros Str., 1645 Nicosia, Cyprus — 4Jefferson Lab, 12000 Jefferson Avenue, Newport News, VA 23606, USA
We present a lattice calculation of nucleon matrix elements using four dynamical flavors using the Nf=2+1+1 maximally twisted mass formulation. The renormalization is performed non-perturbatively in the RI′-MOM scheme.
We give results for the vector and axial vector operators with up to one-derivative and put particular emphasis on systematic effects in the calculation of the matrix elements.