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Measurement of branching fractions and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>and isospin asymmetries for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mo>*</mml:mo></mml:msup><mml:mi>γ</mml:mi></mml:math>
The branching fractions of the decays B0→K*0γ and B+→K*+γ are measured using a sample of 88×106BB¯ events collected with the BABAR detector at the PEP-II asymmetric-energy e+e− collider. We find B(B0→K*0γ)=[3.92±0.20(stat)±0.24(syst)]×10−5, B(B+→K*+γ)=[3.87±0.28(stat)±0.26(syst)]×10−5. Our measurements also constrain the direct CP asymmetry to be −0.074<A(B→K*γ)<0.049 and the isospin asymmetry to be −0.046<Δ0−<0.146, …