Chiral-Symmetry and Strange Four-Quark Matrix Elements

Details Chiral-Symmetry and Strange Four-Quark Matrix Elements Chiral-Symmetry and Strange Four-Quark Matrix Elements

1993-07-08

arxiv.org/abs/hep-ph/9307234v1

Phys.Lett. B313 (1993) 197-202

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages in Plain TeX, MIT CTP #2188

Scientific paper

10.1016/0370-2693(93)91212-6

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 $\Delta I =
1/2$ rule of hyperon and kaon non-leptonic weak decay implies possible large
strange-quark content in the nucleon and pion.

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