Collins, S. and Goeckeler, M. and Haegler, Ph. and Horsley, R. and Nakamura, Y. and Nobile, A. and Pleiter, D. and Rakow, P. E. L. and Schaefer, A. and Schierholz, G. and Schroers, W. and Stueben, H. and Winter, F. and Zanotti, J. M. (2011) Dirac and Pauli form factors from lattice QCD. PHYSICAL REVIEW D, 84 (7): 074507. ISSN 1550-7998,
Full text not available from this repository. (Request a copy)Abstract
We present a comprehensive analysis of the electromagnetic form factors of the nucleon from a lattice simulation with two flavors of dynamical O(a)-improved Wilson fermions. A key feature of our calculation is that we make use of an extensive ensemble of lattice gauge field configurations with four different lattice spacings, multiple volumes, and pion masses down to m(pi) similar to 180 MeV. We find that by employing Kelly-inspired parametrizations for the Q(2) dependence of the form factors, we are able to obtain stable fits over our complete ensemble. Dirac and Pauli radii and the anomalous magnetic moments of the nucleon are extracted and results at light quark masses provide evidence for chiral nonanalytic behavior in these fundamental observables.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHIRAL PERTURBATION-THEORY; INCLUDING VECTOR-MESONS; QUANTUM CHROMODYNAMICS; MOMENTUM-TRANSFER; NUCLEON; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Tilo Wettig Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Dirk Pleiter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Jun 2020 05:03 |
| Last Modified: | 02 Jun 2020 05:03 |
| URI: | https://pred.uni-regensburg.de/id/eprint/19958 |
Actions (login required)
 |
View Item |
