Radiative Decays of the Upsilon(1S) to a Pair of Charged Hadrons

Details Radiative Decays of the Upsilon(1S) to a Pair of Charged Hadrons Radiative Decays of the Upsilon(1S) to a Pair of Charged Hadrons

2005-10-05

arxiv.org/abs/hep-ex/0510015v1

Phys.Rev.D73:032001,2006

Physics

High Energy Physics

High Energy Physics - Experiment

17 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2005/, Submitted to PRD

Scientific paper

10.1103/PhysRevD.73.032001

Using data obtained with the CLEO~III detector, running at the Cornell Electron Storage Ring (CESR), we report on a new study of exclusive radiative Upsilon(1S) decays into the final states gamma pi^+ pi^-, gamma K^+ K^-, and gamma p pbar.. We present branching ratio measurements for the decay modes Upsilon(1S) to gamma f_2(1270), Upsilon(1S) to gamma f_2'(1525), and Upsilon(1S) to gamma K^+K^-; helicity production ratios for f_2(1270) and f_2'(1525); upper limits for the decay Upsilon(1S) to gamma f_J(2200), with f_J(2220) to pi^+ pi^-, K^+ K^-, p pbar; and an upper limit for the decay Upsilon(1S) to gamma X(1860), with X(1860) to gamma p pbar.

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