Journal Article

FZJ-2018-01202

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electromagnetic form factors at large momenta from lattice QCD

Chambers, A. J. (Corresponding author) ; Dragos, J. ; Horsley, R. ; Nakamura, Y. ; Perlt, H. ; Pleiter, D.FZJ* ; Rakow, P. E. L. ; Schierholz, G. ; Schiller, A. ; Somfleth, K. ; Stüben, H. ; Young, R. D. ; Zanotti, J. M.

2017
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/17395  doi:10.1103/PhysRevD.96.114509

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 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.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)
2. John von Neumann - Institut für Computing (NIC)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)
2. Hadron physics using background fields (hlz22_20161101) (hlz22_20161101)

Appears in the scientific report 2018

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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