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A derivative of the Gerasimov-Drell-Hearn sum rule
PHYSICS LETTERS B
  • V Pascalutsa
  • BR Holstein
  • M Vanderhaeghen
Publication Date
2004
Abstract
We derive a sum rule which establishes a linear relation between a particle's anomalous magnetic moment and a quantity connected to the photoabsorption cross section. This quantity cannot be measured directly. However, it can be computed within a given theory. As an example, we demonstrate validity of the sum rule in QED at tree level—the renowned Schwinger's correction to the anomalous magnetic moment is readily reproduced. In the case of the strong interactions, we also consider the calculation of the nucleon magnetic moment within chiral theories.
Disciplines
Comments
This is the pre-published version which is collected from arXiv. The published version is at http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVN-4D98CCD-4&_user=1516330&_coverDate=10%2F28%2F2004&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_acct=C000053443&_version=1&_urlVersion=0&_userid=1516330&md5=54064bfd651495eb5b9a24cefbbe3193&searchtype=a
Pages
239-247
Citation Information
V Pascalutsa, BR Holstein and M Vanderhaeghen. "A derivative of the Gerasimov-Drell-Hearn sum rule" PHYSICS LETTERS B Vol. 600 Iss. 3-4 (2004)
Available at: http://works.bepress.com/barry_holstein/65/