Chiral dynamics of baryon resonances and hadrons in a nuclear medium

Details Chiral dynamics of baryon resonances and hadrons in a nuclear medium Chiral dynamics of baryon resonances and hadrons in a nuclear medium

2005-04-11

arxiv.org/abs/nucl-th/0504033v1

Pramana 66:731-752,2006

Physics

Nuclear Physics

Nuclear Theory

Lectures given in the Workshop on Hadron Physics, Puri (India), march 2005

Scientific paper

10.1007/BF02704803

In these lectures I make an introduction to chiral unitary theory applied to the meson baryon interaction and show how several well known resonances are dynamically generated, and others are predicted. Two very recent experiments are analyzed, one of them showing the existence of two $\Lambda(1405)$ states and the other one providing support for the $\Lambda(1520)$ resonance as a quasibound state of $\Sigma(1385) \pi$. The use of chiral Lagrangians to account for the hadronic interaction at the elementary level introduces a new approach to deal with the modification of meson and baryon properties in a nuclear medium. Examples of it for $\bar{K}$, $\eta$ and $\phi$ modification in the nuclear medium are presented.

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