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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2512.08363 |
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| _version_ | 1866914423905452032 |
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| author | The BABAR Collaboration |
| author_facet | The BABAR Collaboration |
| contents | Results are presented on $χ_{b1,2}(2P) \to ωΥ(1S)$ transitions from $e^+e^- \to Υ(3S) \to γχ_{b1,2}(2P)$ decays. The data were collected with the BaBar detector at the PEP-II asymmetric-energy $e^+e^-$ collider at SLAC. The integrated luminosity of the data sample is 28.0 fb$^{-1}$, corresponding to $121.3 \times 10^6$ $Υ(3S)$ decays. Signals of $χ_{b1,2}(2P)$ are observed over a negligible background. Improved precision measurements of branching fractions are obtained. First measurements of the $χ_{b1,2}(2P)$ angular distributions are performed. No evidence is found for the presence of a $χ_{b0}(2P) \to ωΥ(1S)$ decay mode. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_08363 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Study of $χ_{b1,2}(2P) \to ωΥ(1S)$ transitions in $Υ(3S) \to γχ_{b1,2}(2P)$ decays at BaBar The BABAR Collaboration High Energy Physics - Experiment Results are presented on $χ_{b1,2}(2P) \to ωΥ(1S)$ transitions from $e^+e^- \to Υ(3S) \to γχ_{b1,2}(2P)$ decays. The data were collected with the BaBar detector at the PEP-II asymmetric-energy $e^+e^-$ collider at SLAC. The integrated luminosity of the data sample is 28.0 fb$^{-1}$, corresponding to $121.3 \times 10^6$ $Υ(3S)$ decays. Signals of $χ_{b1,2}(2P)$ are observed over a negligible background. Improved precision measurements of branching fractions are obtained. First measurements of the $χ_{b1,2}(2P)$ angular distributions are performed. No evidence is found for the presence of a $χ_{b0}(2P) \to ωΥ(1S)$ decay mode. |
| title | Study of $χ_{b1,2}(2P) \to ωΥ(1S)$ transitions in $Υ(3S) \to γχ_{b1,2}(2P)$ decays at BaBar |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2512.08363 |