Moments of the photon spectrum in the inclusive B → Xsγ decay

The moments of the photon spectrum in the inclusive B → Xsγ decay can be calculated to order αs accuracy at present, without knowing the αs corrections to the effective Hamiltonian. We discuss the standard model predictions, and how the moments of the photon spectrum are related to certain matrix elements of the heavy quark effective theory. The sensitivity of these moments to new physics is small, and they provide a model-independent determination of the b quark pole mass (at order αs), or equivalently, the matrix elements Λ and λ1 of the effective theory.