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arXiv · hep-ph/0404176

Rho - Omega Splitting and Mixing in Nuclear Matter

S. Zschocke·B. Kampfer
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Abstract

We investigate the splitting and mixing of $ρ$ and $ω$ mesons in nuclear matter. The calculations were performed on the basis of QCD sum rules and include all operators up to mass dimension-6 twist-4 and up to first order in the coupling constants. Special attention is devoted to the impact of the scalar 4-quark condensates on both effects. In nuclear matter the Landau damping governs the $ρ- ω$ mass splitting while the scalar 4-quark condensates govern the strenght of individual mass shifts. A strong in-medium mass splitting causes the disappearance of the $ρ- ω$ mixing.

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S. Zschocke, B. Kampfer. 2004-10-11. Rho - Omega Splitting and Mixing in Nuclear Matter. https://doi.org/10.1103/physrevc.70.035207%2010.1103%2Fphysrevc.70.049901

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