Predicting the isospin asymmetry in B → K* γ using holographic AdS/QCD distribution amplitudes for the K*

We predict the isospin asymmetry well as the branching ratio for the decay B -> K* gamma within QCD factorization using new anti-de Sitter/quantum chromodynamics (AdS/QCD) holographic distribution amplitudes (DAs) for the K* meson. Our prediction for the branching ratio agrees with that obtained using standard QCD sum-rules (SR) DAs and with experiment. More interestingly, our prediction for the isospin asymmetry using the AdS/QCD DA does not suffer from the end-point divergence encountered when using the corresponding SR DA. We predict an isospin asymmetry of 3.2% in agreement with the most recent average measured value of (5.2 +/- 2.6)% quoted by the Particle Data Group.