Chiral symmetry breaking in the kaon-nucleon system

G. Köpp, T. F. Walsh, P. Zerwas

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The s-channel isospin-zero A-amplitude in off-mass-shell kaon-nucleon scattering is investigated at the crossing-symmetric point by evaluating a finite-energy sum rule. Assuming the [(3, 3*) + (3*, 3)] chiral symmetry breaking model of Gell-Mann, Oakes and Rener, we derive a small positive value for the baryon matrix element of the SU(3) invariant part present in the chiral symmetry breaking density.

Original languageEnglish (US)
Pages (from-to)109-124
Number of pages16
JournalNuclear Physics, Section B
Issue numberC
StatePublished - Jun 1 1972

Bibliographical note

Funding Information:
* Work supported in part by the German Bundesministerium fiir Bildung und Wissenschaft. ** On leave from III. Physikalisches lnstitut der Technischen Hochschule Aachen.


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