Diagonal and transition magnetic moments of negative parity heavy baryons in QCD sum rules

Abstract

Diagonal and transition magnetic moments of the negative parity, spin-1/2 heavy baryons are studied in framework of the light cone QCD sum rules. By constructing the sum rules for different Lorentz structures, the unwanted contributions coming from negative (positive) to positive (negative) parity transitions are removed. It is obtained that the magnetic moments of all baryons, except ${\Lambda }_b^0$, ${\Sigma }_c^{+}$ and ${\Xi }_c^{\prime +}$, are quite large. It is also found that the transition magnetic moments between neutral negative parity heavy ${\Xi }_Q^{\prime 0}$ and ${\Xi }_Q^0$ baryons are very small. Magnetic moments of the ${\Sigma }_Q\to {\Lambda }_Q$ and ${\Xi }_Q^{\prime \pm }\to {\Xi }_Q^{\pm }$ transitions are quite large and can be measured in further experiments.

31 pages, 4 figures, LaTeX formatted. arXiv admin note: substantial text overlap with arXiv:1504.00172, arXiv:1504.08187

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• Interpretation of the new ${\Omega }_c^0$ states via their mass and width
• Magnetic moments of the octet, decuplet, low-lying charm, and low-lying bottom baryons in a nuclear medium
• Semileptonic ${\Xi }_c$ baryon decays in the light cone QCD sum rules
• Radiative decays of the p-wave charmed heavy baryons
• Form factors for the rare $Λ_{b}(Λ_{b}^*)\rar N\ell^+\ell^- $ decays in light cone QCD sum rules
• Mass and magnetic dipole moment of negative parity heavy baryons with spin--3/2
• Strong Vertices of Doubly Heavy Spin-3/2 Baryons with Light Pseudoscalar Mesons
• Magnetic moment for the negative parity $\Lambda \to {\Sigma }^0$ transition in light cone QCD sum rules