Strange magnetic form factor of the nucleon in a chiral effective model at next to leading order
Date
2014
Authors
Wang, P.
Leinweber, D.
Thomas, A.
Editors
Advisors
Journal Title
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Volume Title
Type:
Journal article
Citation
Physical Review D: Particles, Fields, Gravitation and Cosmology, 2014; 89(3):033008-1-033008-8
Statement of Responsibility
P. Wang, D. B. Leinweber, and A. W. Thomas
Conference Name
Abstract
The strange magnetic form factor of the nucleon is studied in a chiral effective model motivated by the heavy baryon formalism at next-to-leading order. The one-loop contributions from kaon and intermediate octet and decuplet hyperons are included, using finite-range regularization to deal with the ultraviolet divergences. Drawing on an established connection between quenched and full QCD, this model makes it possible to predict the strange magnetic form factor under the hypothesis that for a dipole regulator mass Λ around 0.8 GeV, strangeness in the core is negligible. The strange magnetic form factor is found to be small and negative over a range of momentum transfer, while the strange magnetic moment is consistent with the best lattice QCD determinations.
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Dissertation Note
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Published 18 February 2014
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© 2014 American Physical Society