| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10725730 | Physics Letters B | 2010 | 6 Pages |
Abstract
We present a dispersion relation in the pion-mass squared, which static quantities (nucleon mass, magnetic moment, etc.) obey under the assumption of analyticity in the entire complex mÏ2 plane modulo a cut at negative mÏ2 associated with pion production. The relation is verified here in a number of examples of nucleon and Î-isobar properties computed in chiral perturbation theory up to order p3. We outline a method to obtain relations for other mass-dependencies and illustrate it on a two-loop example.
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Authors
Tim Ledwig, Vladimir Pascalutsa, Marc Vanderhaeghen,