Positive and negative-parity flavor-octet baryons in coupled QCD sum rules

Abstract

We apply the method of the QCD sum rule, in which positiveand negative-parity baryons couple with each other, to the flavor-octet hyperons and investigate the parity splittings. We also reexamine the nucleon in the method, which was studied in our previous paper, by carefully choosing the Borel weight. Both in the nucleon and hyperon channels the obtained… (More)

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