A guide to the QCD light-cone sum rule for $b$-quark decays

Abstract

We overview the current status and future perspectives of the QCD-based method of light-cone sum rules. The two main versions of these sum rules, using light-meson and $B$-meson distribution amplitudes are introduced and the most important applications of the method are discussed. We also outline open problems and future perspectives of this method.

Invited review for EPJST, 48 pages, 8 tables