Title

Measurements of Branching Fractions for Electromagnetic Transitions Involving the χ_{bJ}(1P) States

Author(s)/Creator(s)

Raymond Mountain, Syracuse UniversityFollow
Marina Artuso, Department of Physics, Syracuse University, Syracuse, NYFollow
S. Blusk, Department of Physics, Syracuse University, Syracuse, NYFollow
T. Skwarnicki, Department of Physics, Syracuse University, Syracuse, NY

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.

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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Recommended Citation

Mountain, Raymond; Artuso, Marina; Blusk, S.; and Skwarnicki, T., "Measurements of Branching Fractions for Electromagnetic Transitions Involving the χ_{bJ}(1P) States" (2011). Physics - All Scholarship. 383.
https://surface.syr.edu/phy/383

Source

Harvested from Arxiv.org

Creative Commons License

This work is licensed under a Creative Commons Attribution 3.0 License.