Analysis of the ${1\over 2}^{\pm}$ flavor antitriplet heavy baryon states with QCD sum rules

Details Analysis of the ${1\over 2}^{\pm}$ flavor antitriplet heavy baryon states with QCD sum rules Analysis of the ${1\over 2}^{\pm}$ flavor antitriplet heavy baryon states with QCD sum rules

2010-01-11

arxiv.org/abs/1001.1652v4

Eur.Phys.J.C68:479-486,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 16 figures, published version

Scientific paper

10.1140/epjc/s10052-010-1365-8

In this article, we study the masses and pole residues of the ${1\over 2}^\pm$ flavor antitriplet heavy baryon states ($\Lambda_c^+$, $\Xi_c^+,\Xi_c^0)$ and ($\Lambda_b^0$, $\Xi_b^0,\Xi_b^-)$ by subtracting the contributions from the corresponding ${1\over 2}^\mp$ heavy baryon states with the QCD sum rules, and observe the masses are in good agreement with the experimental data and make reasonable predictions for the unobserved ${1\over 2}^-$ bottom baryon states. Once reasonable values of the pole residues $\lambda_{\Lambda}$ and $\lambda_{\Xi}$ are obtained, we can take them as basic parameters to study the revelent hadronic processes with the QCD sum rules.

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