Title
Measurements of Branching Fractions for Electromagnetic Transitions Involving the χbJ(1P) States
Document Type
Article
Date
3-16-2011
Language
English
Disciplines
Physics
Description/Abstract
Using 9.32, 5.88 million Upsilon(2S,3S) decays taken with the CLEO-III detector, we obtain five product branching fractions for the exclusive processes Upsilon(2S) => gamma chi_{b0,1,2}(1P) => gamma gamma Upsilon(1S) and Upsilon(3S) => gamma chi_{b1,2}(1P) => gamma gamma Upsilon(1S). We observe the transition chi_{b0}(1P) => gamma Upsilon(1S) for the first time. Using the known branching fractions for B[Upsilon(2S) => gamma chi_{bJ}(1P)], we extract values for B[chi_{bJ}(1P) => gamma Upsilon(1S)] for J=0, 1, 2. In turn, these values can be used to unfold the Upsilon(3S) product branching fractions to obtain values for B[Upsilon(3S) => gamma chi_{b1,2}(1P) for the first time individually. Comparison of these with each other and with the branching fraction B[Upsilon(3S) => gamma chi_{b0}] previously measured by CLEO provides tests of relativistic corrections to electric dipole matrix elements.
Recommended Citation
Mountain, Raymond; Artuso, Marina; Blusk, S.; and Skwarnicki, T., "Measurements of Branching Fractions for Electromagnetic Transitions Involving the χbJ(1P) States" (2011). Physics - All Scholarship. 345.
https://surface.syr.edu/phy/345
Source
Harvested from Arxiv.org
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Additional Information
22 pages, 6 figures, version published in Physical Review D More information at http://arxiv.org/abs/1012.0589
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