Jun 2 – 7, 2019
Carnegie Mellon University
America/New_York timezone

From $\bar{K}N$ interactions to $\bar{K}$-nuclear quasi-bound states

Jun 4, 2019, 4:00 PM
30m
Rangos 2

Rangos 2

Invited Meson-Nucleon Interactions Few-Body Systems

Speaker

Dr Ales Cieply (Nuclear Physics Institute, Rez, Czechia)

Description

The current chirally motivated theoretical approaches to low energy $\bar{K}N$ interactions
were reviewed in [1] with a special attention paid to the origin of resonances generated
dynamically within the coupled channels models derived from an effective SU(3) chiral
Lagrangian. The $\Lambda(1405)$ represents a well known resonance of this kind, interpreted
as a molecular $\bar{K}N$ bound state submerged in the $\pi\Sigma$ continuum, and affecting
strongly the properties of the $\bar{K}N$ system at low and subthreshold energies.
The dynamics of the $\bar{K}N$ system in nuclear matter was studied in [2] where the effects
due to Pauli blocking and hadron self energies in nuclear matter were discussed.

The $K^{-}N$ scattering amplitudes generated by the chirally motivated approaches and modified
to account for Pauli blocking were then used in the construction of a $K^-$-nuclear optical
potential. This potential was supplemented by a phenomenological term representing the $K^-$
multinucleon interactions, fitted to kaonic atom data. The optical potentials constructed from
the Prague [2] and Kyoto-Munich [3] scattering amplitudes were then applied in calculations of
kaonic nuclei [4]. The $K^-$ multinucleon interactions were found to cause radical increase of
the $K^-$ widths which exceed considerably the $K^-$ binding energies. Finally, we will report
briefly on our recently developed microscopic coupled channels model of the $K^{-}NN$ absorption
using chiral amplitudes [5].

[1] A. Cieply, M. Mai, U.-G. Meissner, J. Smejkal - J. Nucl. Phys. A 954, 17 (2016).
[2] A. Cieply, J. Smejkal - Nucl. Phys. A 881, 115 (2012).
[3] Y. Ikeda, T. Hyodo, W. Weise, Nucl. Phys. A 881, 98 (2012).
[4] J. Hrtankova, J. Mares, Phys. Lett. B 770, 342 (2017); Phys. Rev. C 96, 015205 (2017).
[5] J. Hrtankova, A. Ramos, prepared for publication.

Early Consideration No
Graduate Student No

Primary authors

Dr Ales Cieply (Nuclear Physics Institute, Rez, Czechia) Jaroslava Hrtankova (Nuclear Physics Institute, Rez, Czechia) Jiri Mares (Nuclear Physics Institute, Rez, Czechia) Angels Ramos (Barcelona University, Barcelona, Spain)

Presentation materials