Observation of the Hadronic Transitions chi_b1,2 (2P) --> omega Upsilon(1S)

2003/11/20 by D. Cronin-Hennessy, Cronin-Hennessy, D., CLEO Collaboration +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0311043

9 pages, submitted to PRL

arxiv created 2003/11/20 · arxiv updated 2009/12/01

Abstract

The CLEO Collaboration has made the first observations of hadronic transitions among bottomonium (b-bbar) states other than the dipion transitions among upsns states. In our study of Y(3S) decays, we find a significant signal for Y(3S) -> gamma omega Y(1S) that is consistent with radiative decays Y(3S) -> gamma chi_b1,2(2P), followed by chi_b1,2(2P) -> omega Y(1S). The branching ratios we obtain are B(chi_b1(2P) -> omega Y(1S)) = (1.63 +0.35-0.31 +0.16-0.15)% and B(chi_b2(2P) -> omega Y(1S)) = (1.10 +0.32-0.28 +0.11-0.10)%, in which the first error is statistical and the second is systematic.

Related

• Bottomonium States in Radiative Y(2S) Decays
• Study of Two-Photon Transitions in CLEO-III Υ(3S) Data
• First Observation of Upsilon(1D) States
• CLEO Results on Upsilons
• Searching for new physics in Upsilon decays