Precise Determination of the Strangeness Magnetic Moment of the Nucleon

Journal Article · Fri Jun 03 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.94.212001· OSTI ID:20696330

Leinweber, D B; Boinepalli, S; Cloet, I C; Williams, A G; Young, R D; Zhang, J B ^[1]; Thomas, A W ^[2]; Zanotti, J M ^[3]

---

1. Special Research Centre for the Subatomic Structure of Matter and Department of Physics, University of Adelaide, Adelaide SA 5005 (Australia)
2. Jefferson Laboratory, 12000 Jefferson Avenue, Newport News, Virginia 23606 (United States)
3. John von Neumann-Institut fuer Computing NIC, Deutsches Elektronen-Synchrotron DESY, D-15738 Zeuthen (Germany)

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{sub M}{sup s}=(-0.046{+-}0.019){mu}{sub N} is consistent with the latest experimental measurements but an order of magnitude more precise. This poses a tremendous challenge for future experiments.

• OSTI ID: 20696330
• Journal Information: Physical Review Letters, Vol. 94, Issue 21; Other Information: DOI: 10.1103/PhysRevLett.94.212001; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRALITY
EXTRAPOLATION
MAGNETIC MOMENTS
MASS
PROTONS
QUANTUM CHROMODYNAMICS
QUARKS
SIMULATION
STRANGENESS
SYMMETRY