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.
|Original language||English (US)|
|Number of pages||4|
|Journal||Physical Review C - Nuclear Physics|
|State||Published - Sep 1999|
ASJC Scopus subject areas
- Nuclear and High Energy Physics