Karlsruhe 2011 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 23: Gittereichtheorie I

T 23.6: Vortrag

Montag, 28. März 2011, 18:00–18:15, 30.23: 10-1

Nucleon Matrix Elements with N_f=2+1+1 Maximally Twisted Fermions — •Simon Dinter¹, Constantia Alexandrou^2,3, 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 N_f=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.