QCD interactions of heavy mesons with pions by light-cone sum rules

Light-cone QCD sum rules are employed to compute the strong coupling constants: , and , where and are negative and positive parity and doublets. The couplings are calculated both for finite values of the heavy quark mass and in the infinite heavy quark mass limit, deriving sum rules for . Received: 30 May 1997 / Revised version: 7 October 1997 / Published online: 23 February 1998