This title appears in the Scientific Report :
2018
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevD.96.114509 in citations.
Please use the identifier: http://hdl.handle.net/2128/17395 in citations.
Electromagnetic form factors at large momenta from lattice QCD
Electromagnetic form factors at large momenta from lattice QCD
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 tha...
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Personal Name(s): | Chambers, A. J. (Corresponding author) |
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Dragos, J. / Horsley, R. / Nakamura, Y. / Perlt, H. / Pleiter, D. / Rakow, P. E. L. / Schierholz, G. / Schiller, A. / Somfleth, K. / Stüben, H. / Young, R. D. / Zanotti, J. M. | |
Contributing Institute: |
John von Neumann - Institut für Computing; NIC Jülich Supercomputing Center; JSC |
Published in: | Physical Review D Physical review / D, 96 96 (2017 2017) 11 11, S. 114509 114509 |
Imprint: |
Woodbury, NY
Inst.
2017
2017-12-26 2017-12-01 |
DOI: |
10.1103/PhysRevD.96.114509 |
Document Type: |
Journal Article |
Research Program: |
Hadron physics using background fields Computational Science and Mathematical Methods |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/17395 in citations.
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 mπ≈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. |