Dynamically Generated $\Xi (1690)$

Abstract

We show that the $\Xi (1690)$ resonance can be dynamically generated in the $s$-wave $\bar{K}\Sigma$-$\bar{K}\Lambda$-$\pi \Xi$-$\eta \Xi$ coupled-channels chiral unitary approach. In our model, the $\Xi (1690)$ resonance appears near the $\bar{K}\Sigma$ threshold as a $\bar{K}\Sigma$ molecular state and the experimental data are reproduced well. We discuss properties of the dynamically generated $\Xi (1690)$.

4 pages, 4 EPS figures, talk given at the 12th International Conference on Hypernuclear and Strange Particle Physics (HYP2015), Tohoku, Japan, 7-12 Sep. 2015

References in corpus (8)

• Big-Bang Nucleosynthesis
• Comprehensive analysis of the wave function of a hadronic resonance and its compositeness
• anti-K anti-K N molecule state in three-body calculation
• Electromagnetic mean squared radii of Lambda(1405) in chiral dynamics
• Compositeness of baryonic resonances: Applications to the Delta(1232), N(1535), and N(1650) resonances
• $\Xi (1690)$ as a $\bar{K}\Sigma$ molecular state
• Measurements of $\psi (3686)\to K^{-}\Lambda {\bar{\Xi }}^{+}+c.c.$ and $\psi (3686)\to \gamma K^{-}\Lambda {\bar{\Xi }}^{+}+c.c$
• Exact calculations of a quasi-bound state in the $\bar{K}\bar{K}N$ system