Chiral dynamics of baryon resonances and hadrons in a nuclear medium

Abstract

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 $\varphi$ modification in the nuclear medium are presented.

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

References in corpus (6)

• Evidence for the two pole structure of the Lambda(1405) resonance
• Baryonic Resonances from Baryon Decuplet-Meson Octet Interaction
• phi photo-production from Li, C, Al, and Cu nuclei at Egamma=1.5 - 2.4 GeV
• Widths of $\bar{K}$-nuclear deeply bound states in a dynamical model
• Chiral coupled channel dynamics of the Lambda(1520) and the K-P -> pi0 pi0 Lambda reaction
• Resonances from Baryon decuplet-Meson octet interaction

Cited by in corpus (11)

• Dynamically generated resonances from the vector octet-baryon octet interaction
• Measurement of the in-medium phi-meson width in proton-nucleus collisions
• Dynamically generated resonances from the vector octet-baryon decuplet interaction
• Role of the $N^{\ast }$(1535) in the $J/\psi \to \bar{p}\eta p$ and $J/\psi \to \bar{p}{K}^{+}\Lambda$ reactions
• Decay of vector-vector resonances into $\gamma$ and a pseudoscalar meson
• Baryon Resonances
• $VP\gamma$ radiative decay of resonances dynamically generated from the vector meson-vector meson interaction
• ${\pi }^0\gamma$ invariant mass distribution in the low energy $\gamma p\to \omega p$ reaction
• Dynamically generated resonances
• Photo- and Electron-Production of Mesons on Nucleons and Nuclei
• Recent developments in chiral dynamics of hadrons and hadrons in a nuclear medium