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Search for the radiative decay<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>→</mml:mo><mml:mi>ϕ</mml:mi><mml:mi>γ</mml:mi></mml:math>

Search for the radiative decay<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>→</mml:mo><mml:mi>ϕ</mml:mi><mml:mi>γ</mml:mi></mml:math>

We perform a search for the exclusive radiative decay B0→ϕγ, which is dominated by b¯d annihilation, in a sample of 124×106 BB¯ events collected with the BABAR detector at the PEP-II asymmetric-energy e+e− storage ring at SLAC. No significant signal is seen. We set an upper limit on the branching …