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Article
Long distance effects and strangeness in the nucleon
Fizika B (2005)
  • John Donoghue, University of Massachusetts - Amherst
  • Barry R. Holstein
  • Tobias Huber
  • Andreas Ross
Abstract
We discuss the calculation of the strange magnetic radius of the proton in chiral perturbation theory. In particular we investigate the low energy component of the loop integrals involving kaons. We separate the chiral calculation into a low energy part and a high energy component through use of a momentum space separation scale. This separation shows that most of the chiral calculation comes from high energies where the effective field theory treatment is not valid. The resulting low energy prediction is in better agreement with dispersive treatments. Finally, we briefly discuss magnetic moments and show how our techniques can help resolve an old puzzle in understanding the magnetic moments of the proton and Σ+.
Keywords
  • magnetic moments,
  • proton,
  • strange magnetic radius,
  • chiral perturbation theory
Disciplines
Publication Date
December 2, 2005
Citation Information
John Donoghue, Barry R. Holstein, Tobias Huber and Andreas Ross. "Long distance effects and strangeness in the nucleon" Fizika B Vol. 14 Iss. 2 (2005)
Available at: http://works.bepress.com/john_donoghue/143/