Results are presented on χb1,2(2P) → χΥ(1S) transitions from e+e- → Υ(3S) → γχb1,2(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 × 106 Υ(3S) decays. Signals of χb1,2(2P) are observed over a negligible background. Improved precision measurements of branching fractions are obtained. First measurements of the χb1,2(2P) angular distributions are performed. No evidence is found for the presence of χb0(2P) → ωΥ(1S) decay mode.
Study of χb1,2 → ω(sic)(2)(1S) transitions in (sic)(3S) → γχb1,2 (2P) decays at BABAR / J. . Lees, V.P.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 113:5(2026 Mar 26), pp. 052010.1-052010.14. [10.1103/sn5h-c2t9]
Study of χb1,2 → ω(sic)(2)(1S) transitions in (sic)(3S) → γχb1,2 (2P) decays at BABAR
N. Neri;F. Palombo;F. Simonetto;
2026
Abstract
Results are presented on χb1,2(2P) → χΥ(1S) transitions from e+e- → Υ(3S) → γχb1,2(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 × 106 Υ(3S) decays. Signals of χb1,2(2P) are observed over a negligible background. Improved precision measurements of branching fractions are obtained. First measurements of the χb1,2(2P) angular distributions are performed. No evidence is found for the presence of χb0(2P) → ωΥ(1S) decay mode.| File | Dimensione | Formato | |
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