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arXiv · 1101.5540

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

Simon Dinter·Constantia Alexandrou·Martha Constantinou·Vincent Drach·Karl Jansen·Dru Renner
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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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Simon Dinter, Constantia Alexandrou, Martha Constantinou, Vincent Drach, Karl Jansen, Dru Renner. 2011-01-28. Nucleon matrix elements with $N_f=2+1+1$ maximally twisted fermions. https://arxiv.org/abs/1101.5540

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