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Measurement of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="script">B</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mi>Υ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>5</mml:mn><mml:mi>S</mml:mi><mml:mo stretchy="false">)</mml:mo><mml:mo>→</mml:mo><mml:msubsup><mml:mi>B</mml:mi><mml:mi>s</mml:mi><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mo>*</mml:mo><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:msubsup><mml:msubsup><mml:mover…
Knowledge of the ${B}_{s}$ decay fraction of the $\ensuremath{\Upsilon}(5S)$ resonance, ${f}_{S}$, is important for ${B}_{s}$ meson studies at the $\ensuremath{\Upsilon}(5S)$ energy. Using a data sample collected by the CLEO III detector at CESR consisting of $0.423\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ on the $\ensuremath{\Upsilon}(5S)$ resonance, $6.34\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ on the $\ensuremath{\Upsilon}(4S)$ and $2.32\text{ …