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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.14093 |
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| _version_ | 1866917223057063936 |
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| author | Belle, Martin Bartl for the Collaborations, Belle-II |
| author_facet | Belle, Martin Bartl for the Collaborations, Belle-II |
| contents | The Belle and Belle II experiments have collected an 1.6 ab$^{-1}$ sample of $e^+e^-$ collision data at center-of-mass energies near the $Υ(nS)$ resonances. In particular, the Belle II experiment collected a 19.2 fb$^{-1}$ sample of data at center-of-mass energies near the $Υ(10753)$ resonance. We study the following processes: $e^+e^-\to Υ(nS)η$, $e^+e^-\to γX_b(χ_{bJ}π^+π^-)$, and $e^{+}e^{-}\toχ_{bJ}(1P) γ$. These results provide additional information about the nature of the $Υ(10753)$ resonance and nearby structures. In addition, we measure the $B^{0}$ and $B^+$ meson mass difference, and $σ\left(e^+ e^-\to J/ψp\bar{p}\right)$ over a range of center-of-mass energies accessed via initial-state radiation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_14093 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Studies of Hadron Spectroscopy at Belle and Belle II Belle, Martin Bartl for the Collaborations, Belle-II High Energy Physics - Experiment The Belle and Belle II experiments have collected an 1.6 ab$^{-1}$ sample of $e^+e^-$ collision data at center-of-mass energies near the $Υ(nS)$ resonances. In particular, the Belle II experiment collected a 19.2 fb$^{-1}$ sample of data at center-of-mass energies near the $Υ(10753)$ resonance. We study the following processes: $e^+e^-\to Υ(nS)η$, $e^+e^-\to γX_b(χ_{bJ}π^+π^-)$, and $e^{+}e^{-}\toχ_{bJ}(1P) γ$. These results provide additional information about the nature of the $Υ(10753)$ resonance and nearby structures. In addition, we measure the $B^{0}$ and $B^+$ meson mass difference, and $σ\left(e^+ e^-\to J/ψp\bar{p}\right)$ over a range of center-of-mass energies accessed via initial-state radiation. |
| title | Studies of Hadron Spectroscopy at Belle and Belle II |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2601.14093 |