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Type: Journal article
Title: Electromagnetic form factors at large momenta from lattice QCD
Author: Chambers, A.
Dragos, J.
Horsley, R.
Nakamura, Y.
Perlt, H.
Pleiter, D.
Rakow, P.
Schierholz, G.
Schiller, A.
Somfleth, K.
Stüben, H.
Young, R.
Zanotti, J.
Citation: Physical Review D, 2017; 96(11):114509-1-114509-7
Publisher: American Physical Society
Issue Date: 2017
ISSN: 2470-0010
Statement of
A.J. Chambers, J. Dragos, R. Horsley, Y. Nakamura, H. Perlt, D. Pleiter, P.E.L. Rakow, G. Schierholz, A. Schiller, K. Somfleth, H. Stüben, R.D. Young and J.M. Zanotti
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.
Rights: © 2017 American Physical Society
RMID: 0030080710
DOI: 10.1103/PhysRevD.96.114509
Grant ID:
Appears in Collections:Physics publications

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