Chambers, A. J. and Dragos, J. and Horsley, R. and Nakamura, Y. and Perlt, H. and Pleiter, D. and Rakow, P. E. L. and Schierholz, G. and Schiller, A. and Somfleth, K. and Stueben, H. and Young, R. D. and Zanotti, J. M. (2017) Electromagnetic form factors at large momenta from lattice QCD. PHYSICAL REVIEW D, 96 (11): 114509. ISSN 2470-0010, 2470-0029
Full text not available from this repository. (Request a copy)Abstract
Accessing hadronic form factors at large momentum transfers has traditionally presented a challenge for lattice QCD simulations. Here, we demonstrate how a novel implementation of the Feynman-Hellmann method can be employed to calculate hadronic form factors in lattice QCD at momenta much higher than previously accessible. Our simulations are performed on a single set of gauge configurations with three flavors of degenerate mass quarks corresponding to m(pi) approximate to 470 MeV. We are able to determine the electromagnetic form factors of the pion and nucleon up to approximately 6 GeV2, with results for the ratio of the electric and magnetic form factors of the proton at our simulated quark mass agreeing well with experimental results.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Dirk Pleiter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:18 |
| Last Modified: | 28 Feb 2019 09:40 |
| URI: | https://pred.uni-regensburg.de/id/eprint/1670 |
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