Antideuteron production in<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:mi>n</mml:mi><mml:mi>S</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>decays and the nearby continuum
Antideuteron production in<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:mi>n</mml:mi><mml:mi>S</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>decays and the nearby continuum
Using CLEO data, we study the production of the antideuteron, $\overline{d}$, in $\ensuremath{\Upsilon}(nS)$ resonance decays and the nearby continuum. The branching ratios obtained are ${\mathcal{B}}^{\mathrm{dir}}(\ensuremath{\Upsilon}(1S)\ensuremath{\rightarrow}\overline{d}X)=(3.36\ifmmode\pm\else\textpm\fi{}0.23\ifmmode\pm\else\textpm\fi{}0.25)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, $\mathcal{B}(\ensuremath{\Upsilon}(1S)\ensuremath{\rightarrow}\overline{d}X)=(2.86\ifmmode\pm\else\textpm\fi{}0.19\ifmmode\pm\else\textpm\fi{}0.21)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, and $\mathcal{B}(\ensuremath{\Upsilon}(2S)\ensuremath{\rightarrow}\overline{d}X)=(3.37\ifmmode\pm\else\textpm\fi{}0.50\ifmmode\pm\else\textpm\fi{}0.25)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, where the ``dir'' superscript indicates that decays produced via reannihilation of the $b\overline{b}$ pair to a ${\ensuremath{\gamma}}^{*}$ are removed from both the …