Bottomonium Spectroscopy at CLEO

Details Bottomonium Spectroscopy at CLEO Bottomonium Spectroscopy at CLEO

2009-12-14

arxiv.org/abs/0912.2704v2

PoS BEAUTY2009:037,2009

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 6 figures, presented at Beauty 2009, 12th International Conference on B-Physics at Hadron Machines, Sept. 7-11th, Hei

Scientific paper

Results of the latest CLEO contribution to bottomonium spectroscopy is presented, the confirmation of the eta_b(1S0) ground state of bottomonium in the radiative decay Upsilon(3S) -> gamma eta_b. The bottomonium hyperfine splitting is determined to be Delta M_hf(1S) = 68.5+-6.6+-2.0 MeV and the branching fraction B(Upsilon(3S) -> gamma eta_b=(7.1+-1.8+-1.1)x10^-4. These results are in good agreement with those reported by BaBar.

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