Dynamical Generation of Hyperon Resonances

Abstract

In this talk we report on how, using a chiral unitary approach for the meson--baryon interactions, two octets of $J^{\pi }=1/2^{-}$ baryon states and a singlet are generated dynamically, resulting in the case of strangeness $S=-1$ in two poles of the scattering matrix close to the nominal $\Lambda (1405)$ resonance. We suggest experiments which could show evidence for the existence of these states.

Invited talk in the VIII International Conference on Hypernuclei and Strange Particle Physics

References in corpus (22)

• Chiral Dynamics in Nucleons and Nuclei
• Chiral dynamics in the presence of bound states: kaon-nucleon interactions revisited
• Non perturbative chiral approach to s-wave \bar{K}N interactions
• Chiral Symmetry Amplitudes in the S-Wave Isoscalar and Isovector Channels and the σ, f_0(980), a_0(980) Scalar Mesons
• Chiral symmetry amplitudes in the s-wave isoscalar and isovector channels and the $\sigma ,f_0(980),a_0(980)$ scalar mesons
• Chiral Dynamics of the Two Λ(1405) States
• Chiral Dynamics and the Low Energy Kaon-Nucleon Interaction
• Chiral perturbation theory
• Meson-Meson interaction in a non-perturbative chiral approach
• N/D Description of Two Meson Amplitudes and Chiral Symmetry
• Chiral Perturbation Theory
• SU(3) Chiral Dynamics with Coupled Channels: Eta and Kaon Photoproduction
• Recent Developments in Chiral Perturbation Theory
• Chiral unitary approach to S-wave meson baryon scattering in the strangeness S=0 sector
• Low lying S=-1 excited baryons and chiral symmetry
• $S=-1$ Meson-Baryon Unitarized Coupled Channel Chiral Perturbation Theory and the $S_{01}-$ $\Lambda$(1405) and $-\Lambda$(1670) Resonances
• Photoproduction of the Lambda(1405) on the proton and nuclei
• On the spin, parity and nature of the $\Xi (1620)$ resonance
• Magnetic moments of the Lambda(1405) and Lambda(1670) resonances
• $\Lambda (1405)$ production in the ${\pi }^{-}p\to K^0\pi \Sigma$ reaction
• Radiative production of the Lambda(1405) resonance in K collisions on protons and nuclei
• The S-wave Λπphase shift is not large

Cited by in corpus (3)

• Semileptonic Decays of Heavy Lambda Baryons in a Quark Model
• Helicity Amplitudes of the Lambda(1670) and two Lambda(1405) as dynamically generated resonances
• ${\Lambda }_c$ Semileptonic Decays in a Quark Model