Phys. Rev. Lett. 94, 212001 (2005) [4 pages]

Precise Determination of the Strangeness Magnetic Moment of the Nucleon

Abstract

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D. B. Leinweber¹, S. Boinepalli¹, I. C. Cloet¹, A. W. Thomas², A. G. Williams¹, R. D. Young¹, J. M. Zanotti³, and J. B. Zhang¹
¹Special Research Centre for the Subatomic Structure of Matter and Department of Physics, University of Adelaide, Adelaide SA 5005, Australia
²Jefferson Laboratory, 12000 Jefferson Avenue, Newport News, Virginia 23606, USA
³John von Neumann-Institut für Computing NIC, Deutsches Elektronen-Synchrotron DESY, D-15738 Zeuthen, Germany

Received 8 June 2004; published 3 June 2005

By combining the constraints of charge symmetry with new chiral extrapolation techniques and recent low mass quenched lattice-QCD simulations of the individual quark contributions to the magnetic moments of the nucleon octet, we obtain a precise determination of the strange magnetic moment of the proton. The result, namely, G_M^s=(-0.046±0.019)μ_N is consistent with the latest experimental measurements but an order of magnitude more precise. This poses a tremendous challenge for future experiments.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.94.212001

DOI:

10.1103/PhysRevLett.94.212001

PACS:

12.39.Fe, 12.38.Gc, 13.40.Em, 14.20.Dh

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Phys. Rev. Lett. 94, 212001 (2005) [4 pages]

Precise Determination of the Strangeness Magnetic Moment of the Nucleon