Determination of the Strange Nucleon Form Factors

CSSM QCDSF UKQCD Collaborations, P. E. Shanahan*, R. Horsley, Y. Nakamura, D. Pleiter, P. E. L. Rakow, G. Schierholz, H. Stueben, A. W. Thomas, R. D. Young, J. M. Zanotti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The strange contribution to the electric and magnetic form factors of the nucleon is determined at a range of discrete values of Q(2) up to 1.4 GeV2. This is done by combining a recent analysis of lattice QCD results for the electromagnetic form factors of the octet baryons with experimental determinations of those quantities. The most precise result is a small negative value for the strange magnetic moment: G(M)(S) (Q(2) = 0) = -0.07 +/- 0.03 mu(N). At larger values of Q(2) both the electric and magnetic form factors are consistent with zero to within 2 standard deviations.

Original languageEnglish
Article number091802
Number of pages5
JournalPhysical Review Letters
Volume114
Issue number9
DOIs
Publication statusPublished - 3 Mar 2015

Keywords

  • MAGNETIC-MOMENT
  • RADIUS
  • VECTOR
  • MODEL
  • QCD

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