MENU 2023 - The 16th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon

Hadron Spectroscopy at Belle and Belle II

16 Oct 2023, 11:30

30m

Talk Plenary talk

Speaker

Seongbae Yang (Korea University)

Description

Belle II, which commenced data acquisition in 2019, has already yielded research results in hadron spectroscopy. The $e^{+}{e}^{-}$ collision data, taken at or near the $\mathrm{{\rm Y}}(4S)$ resonance, are well-suited for studying hadrons with a high-performance detector system. In this presentation, we will show the latest research outcomes in hadron spectroscopy, including searches for the hidden bottom transitions between $\mathrm{{\rm Y}}(10753)$ and bottomonia, measurements of the energy dependence of the $e^{+}{e}^{-}\to B^{(\ast )}{\overline{B}}^{(\ast )}$ cross-section, and lifetime measurements of charmed hadrons. The talk also covers recent results from the Belle experiment, which ended operation in 2010. Notably, we will reveal a threshold cusp observed at the $\mathrm{\Lambda }\eta$ threshold in the $p{K}^{-}$ system and new $\mathrm{\Lambda }\pi$ signals observed near the $\overline{K}N$ mass threshold in the ${\mathrm{\Lambda }}_c^{+}$ decays.

Presentation materials

20231016_menu2023_yang_ver1_1.pdf