Journal Article

FZJ-2015-04987

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Charge symmetry violation in the electromagnetic form factors of the nucleon

Shanahan, P.  E. (Corresponding author) ; Horsley, R. ; Nakamura, Y. ; Pleiter, D.FZJ* ; Rakow, P.  E.  L. ; Schierholz, G. ; Stüben, H. ; Thomas, A.  W. ; Young, R.  D. ; Zanotti, J.  M.

2015
Soc. [S.l.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/8985  doi:10.1103/PhysRevD.91.113006

Abstract: Experimental tests of QCD through its predictions for the strange-quark content of the proton have been drastically restricted by our lack of knowledge of the violation of charge symmetry (CSV). We find unexpectedly tiny CSV in the proton’s electromagnetic form factors by performing the first extraction of these quantities based on an analysis of lattice QCD data. The resulting values are an order of magnitude smaller than current bounds on proton strangeness from parity-violating electron-proton scattering experiments. This result paves the way for a new generation of experimental measurements of the proton’s strange form factors to challenge the predictions of QCD.

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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. Isospin breaking effects in QCD QED including up, down, strange and charmed quarks (hde07_20131101) (hde07_20131101)

Appears in the scientific report 2015

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; 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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