Bali, Gunnar S. and Collins, Sara and Deka, Mridupawan and Glaessle, Benjamin and Goeckeler, Meinulf and Najjar, Johannes and Nobile, Andrea and Pleiter, Dirk and Schaefer, Andreas and Sternbeck, Andre (2012) < x >(u-d) from lattice QCD at nearly physical quark masses. PHYSICAL REVIEW D, 86 (5): 054504. ISSN 1550-7998,
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We determine the second Mellin moment of the isovector quark parton distribution function < x >(u-d) from lattice QCD with N-f = 2 sea quark flavors, employing the nonperturbatively improved Wilson-Sheikholeslami-Wohlert action at a pseudoscalar mass m(pi) = 157(6) MeV. The result is converted nonperturbatively to the RI'-MOM scheme and then perturbatively to the MS scheme at a scale mu = 2 GeV. As the quark mass is reduced we find the lattice prediction to approach the value extracted from experiments.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PERTURBATION-THEORY; NUCLEON; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Gunnar Bali Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Dirk Pleiter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 May 2020 06:17 |
| Last Modified: | 06 May 2020 06:17 |
| URI: | https://pred.uni-regensburg.de/id/eprint/18118 |
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