Nucleon matrix elements with Nf=2+1+1 maximally twisted fermions
Conference
·
· Proceedings of Science
OSTI ID:1022611
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.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1022611
- Report Number(s):
- JLAB-THY-10-1287; DOE/OR/23177-3689; arXiv:1101.5540; TRN: US1104310
- Journal Information:
- Proceedings of Science, Vol. LATTICE2010; Conference: Lattice 2010, Villasimius, Sardinia, Italy, 14-19 Jun 2010.
- Country of Publication:
- United States
- Language:
- English
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