A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Chiral-symmetry and strange four-quark matrix elements
1993
Physics Letters B
Preserved Fulltext
Other Versions
We consider the matrix elements of the left-handed flavor-conserving four-quark operators in the nucleon and pion states. Using chiral symmetry, we derive relationships among these matrix elements. We argue that the Δ I = 1/2 rule of hyperon and kaon non-leptonic weak decay implies possible large strange-quark content in the nucleon and pion.
doi:10.1016/0370-2693(93)91212-6
fatcat:tnn5zb4zkzadriegx32lnou4xa