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Radiative decays of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Υ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:mi mathvariant="normal">S</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>to a pair of charged hadrons
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 Υ(1S) decays into the final states γπ+π−, γK+K−, and γp¯p. We present branching ratio measurements for the decay modes Υ(1S)→γf2(1270), Υ(1S)→γf′2(1525), and Υ(1S)→γK+K−; helicity production …