Nature of excited $\Xi$ baryons with threshold effects

Takuma Nishibuchi; Tetsuo Hyodo

doi:10.1051/epjconf/202227110002

Nature of excited $\Xi$ baryons with threshold effects

High Energy Physics - Phenomenology 2022-11-30 v2 Nuclear Theory

Authors: Takuma Nishibuchi , Tetsuo Hyodo

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Spectroscopy of excited baryons with strangeness $S=-2$ is stimulated by recent experimental developments. Here we focus on the $\Xi(1620)$ which locates close to the $\bar{K}\Lambda$ threshold. To take into account the threshold effects, we construct the coupled-channels meson-baryon scattering amplitude where the $\Xi(1620)$ appears as a resonance. We demonstrate that the $\bar{K}\Lambda$ threshold effects distort the peak of the $\Xi(1620)$ resonance from the simple Breit-Wigner distribution.

Keywords

reynolds number wavy cylinder bistable wake direct numerical simulation flow transition gust flows

Cite

@article{arxiv.2208.14608,
  title  = {Nature of excited $\Xi$ baryons with threshold effects},
  author = {Takuma Nishibuchi and Tetsuo Hyodo},
  journal= {arXiv preprint arXiv:2208.14608},
  year   = {2022}
}

Comments

4 pages, Proceedings of the 14th International Conference on Hypernuclear and Strange Particle Physics (HYP2022), 27 June to 1 July 2022. v2: modified the right panel of the figure2

Nature of excited $\Xi$ baryons with threshold effects

Abstract

Keywords

Cite

Comments

Related papers