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Nonleptonic hyperon decays with QCD sum rules

✍ Scribed by E.M. Henley; W.-Y.P. Hwang; L.S. Kisslinger

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 144 KB
Volume: 706
Category: Article
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(02)00757-1

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✦ Synopsis

Despite measurements which date more than 20 years ago, no straightforward solution of the ratio of the parity-conserving (P-wave) to parity-violating (S-wave) decays of the hyperons has been obtained. Here we use two 2-point methods in QCD sum rules to examine the problem. We find that resonance contributions are needed to fit the data, similar to a chiral perturbation theory treatment.

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