The dispersive approach to QCD and its applications to inclusive tau lepton
hadronic decay and hadronic vacuum polarization function are briefly discussed.Comment: Based on talks given at the 12th Workshop on Nonperturbative QCD (10
- 13 June 2013, Paris, France) and the 16th Lomonosov Conference on
Elementary Particle Physics (22 - 28 August 2013, Moscow, Russia); 4 pages, 1
figur