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Search for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:mi>X</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>3872</mml:mn><mml:mo stretchy="false">)</mml:mo><mml:mi>γ</mml:mi></mml:math>
We report the results of a search for the decay ${B}^{0}\ensuremath{\rightarrow}X(3872)(\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})\ensuremath{\gamma}$. The analysis is performed on a data sample corresponding to an integrated luminosity of $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ and containing $772\ifmmode\times\else\texttimes\fi{}{10}^{6}B\overline{B}$ pairs, collected with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider running at the $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance energy. We …