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Search for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>b</mml:mi><mml:mo>→</mml:mo><mml:mi>u</mml:mi></mml:math>transitions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>D</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" …
We search for ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\stackrel{\texttildelow{}}{D}}^{0}{K}^{\ensuremath{-}}$ and ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\stackrel{\texttildelow{}}{D}}^{*0}{K}^{\ensuremath{-}}$ and charge conjugates. Here the symbol ${\stackrel{\texttildelow{}}{D}}^{0}$ indicates decay of a ${D}^{0}$ or ${\overline{D}}^{0}$ into ${K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, while the symbol ${\stackrel{\texttildelow{}}{D}}^{*0}$ indicates decay of a ${D}^{*0}$ or ${\overline{D}}^{*0}$ to ${\stackrel{\texttildelow{}}{D}}^{0}{\ensuremath{\pi}}^{0}$ or ${\stackrel{\texttildelow{}}{D}}^{0}\ensuremath{\gamma}$. These final states can be reached through the $b\ensuremath{\rightarrow}c$ transition ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}^{(*)0}{K}^{\ensuremath{-}}$ followed by …