Nucleon matrix elements with Nf=2+1+1 maximally twisted fermions

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We present the first lattice calculation of nucleon matrix elements using four dynamical flavors. We use the Nf=2+1+1 maximally twisted mass formulation. The renormalization is performed non-perturbatively in the RI'-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 Nf=2 case.

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Simon Dinter, Constantia Alexandrou, Martha Constantinou, Vincent Drach, Karl Jansen, Dru Renner June 1, 2010.

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We present the first lattice calculation of nucleon matrix elements using four dynamical flavors. We use the Nf=2+1+1 maximally twisted mass formulation. The renormalization is performed non-perturbatively in the RI'-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 Nf=2 case.

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135

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  • Journal Name: Proceedings of Science; Journal Volume: LATTICE2010; Conference: Lattice 2010, Villasimius, Sardinia, Italy, 14-19 Jun 2010.

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  • Report No.: JLAB-THY-10-1287
  • Report No.: DOE/OR/23177-1365
  • Report No.: arXiv:1101.5540
  • Grant Number: AC05-06OR23177
  • Office of Scientific & Technical Information Report Number: 1022611
  • Archival Resource Key: ark:/67531/metadc837169

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  • June 1, 2010

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  • May 19, 2016, 3:16 p.m.

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  • Aug. 3, 2016, 6:39 p.m.

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Simon Dinter, Constantia Alexandrou, Martha Constantinou, Vincent Drach, Karl Jansen, Dru Renner. Nucleon matrix elements with Nf=2+1+1 maximally twisted fermions, article, June 1, 2010; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc837169/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.