Observation of the Hadronic Transitions chi_b1,2 (2P) --> omega Upsilon(1S)
High Energy Physics - Experiment
2007-05-23 v1
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.
Cite
@article{arxiv.hep-ex/0311043,
title = {Observation of the Hadronic Transitions chi_b1,2 (2P) --> omega Upsilon(1S)},
author = {D. Cronin-Hennessy and CLEO Collaboration},
journal= {arXiv preprint arXiv:hep-ex/0311043},
year = {2007}
}
Comments
9 pages, submitted to PRL