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Treatment of baryonic resonances in the RQMD approach including scalar-vector mean fields

C. Fuchs·L. Sehn·Amand Faessler·D. S. Kosov·V. S. Uma Maheswari·Z. Wang
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Abstract

In the relativistic Quantum Molecular Dynamics (RQMD) approach baryons are described within the framework of covariant hamilton constraint dynamics. The inclusion of a relativistic mean field results in a quasiparticle picture for the baryons. This requires to distinguish between canonical and kinetic variables of the particles. As resonances we include the $Δ$(1232) and the $N^*$(1440) resonance. The resonance masses are distributed according Breit-Wigner functions. However, the scalar self energy leads to a shift in the masses and introduces an additional medium dependence. Consequences of this description on resonance and pion dynamics are discussed.

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C. Fuchs, L. Sehn, Amand Faessler, D. S. Kosov, V. S. Uma Maheswari, Z. Wang. 1997-02-12. Treatment of baryonic resonances in the RQMD approach including scalar-vector mean fields. https://arxiv.org/abs/nucl-th/9702028

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