Charge-independence breaking in the two-pion-exchange nucleon-nucleon force
- 10 August 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 60 (3) , 034006
- https://doi.org/10.1103/physrevc.60.034006
Abstract
Charge-independence breaking due to the pion-mass difference in the (chiral) two-pion-exchange nucleon-nucleon force is investigated. A general argument based on symmetries is presented that relates the charge-symmetric part of that force to the proton-proton case. The static potential linear in that mass difference is worked out as an explicit example by means of Feynman diagrams, and this confirms the general argument.Keywords
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