Leading logarithms of the $b$ quark mass in inclusive $B\to X_s\gamma$ decay

Anton Kapustin, Zoltan Ligeti, H. David Politzer

Part of the order ${\alpha }_s$ correction to the inclusive $B\to X_s\gamma$ photon spectrum is enhanced by $\log (m_b^2/m_s^2)$. We discuss its origin and sum the corrections proportional to…