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

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arxiv 1101.5540 v1 pith:6ECORYN5 submitted 2011-01-28 hep-lat

Simon Dinter , Constantia Alexandrou , Martha Constantinou , Vincent Drach , Karl Jansen , Dru Renner This is my paper · ORCID
classification hep-lat
keywords calculationelementsmatrixmaximallynucleonresultstwistedvector
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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.

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