QCD Sum Rule for 1/2- Baryons

D. Jido; M. Oka (Tokyo Inst. of Tech.)

QCD Sum Rule for 1/2- Baryons

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arxiv hep-ph/9611322 v2 pith:U6GFSALC submitted 1996-11-14 hep-ph nucl-th

D. Jido , M. Oka (Tokyo Inst. of Tech.) This is my paper

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keywords baryonsrulebaryonflavormassmassesnegativesinglet

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abstract

The masses of the flavor octet and singlet baryons with negative parity and spin 1/2 are calculated using the QCD sum rule. We find that the chiral symmetry breaking vacuum condensates cause the mass splitting of the positive and negative baryons. The present sum rule reproduces the observed masses of these baryons within 10%, and predicts the mass of the excited Xi baryon with $J^P = {1/2}^{-}$ at 1.63 GeV. We confirm that the negative-parity state, $\Lambda_S-$, is the ground state in the flavor singlet baryon spectrum.

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Signatures of Odd-Parity $s$-wave $\Xi^*$ States in Femtoscopic Correlation Functions
hep-ph 2025-07 conditional novelty 6.0 of 10

Using a unitarized hidden-gauge model, the authors dynamically generate Xi(1950)-like and Xi(2120)-like poles and predict femtoscopic correlation functions for six vector-baryon channels.

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