Charge-Independence Breaking in the Two-Pion-Exchange Nucleon-Nucleon Force

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.

10 pages, latex, 1 figure -- epsfig.sty required -- To appear in Phys. Rev. C

References in corpus (1)

• Chiral two-pion exchange and proton-proton partial-wave analysis

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