| Issue |
EPJ Web Conf.
Volume 271, 2022
HYP2022 - 14th International Conference on Hypernuclear and Strange Particle Physics
|
|
|---|---|---|
| Article Number | 10002 | |
| Number of page(s) | 4 | |
| Section | Excited Baryons and Hadrons with Heavy Quarks | |
| DOI | https://doi.org/10.1051/epjconf/202227110002 | |
| Published online | 09 November 2022 | |
https://doi.org/10.1051/epjconf/202227110002
Nature of excited 𝚵 baryons with threshold effects
Department of Physics, Tokyo Metropolitan University, Hachioji 192-0397, Japan
* e-mail: nishibuchi-takuma@ed.tmu.ac.jp
** e-mail: hyodo@tmu.ac.jp
Published online: 9 November 2022
Spectroscopy of excited baryons with strangeness S = −2 is stimulated by recent experimental developments. Here we focus on the Ξ(1620) which locates close to the K̅Λ threshold. To take into account the threshold effects, we construct the coupled-channels meson-baryon scattering amplitude where the Ξ(1620) appears as a resonance. We demonstrate that the K̅Λ threshold effects distort the peak of the Ξ(1620) resonance from the simple Breit-Wigner distribution.
© The Authors, published by EDP Sciences, 2022
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