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| Main Author: | |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.08363 |
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Table of 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.