Couplings of pions with excited heavy mesons from light cone QCD sum   rules in the leading order of HQET
  The couplings of pions with lowest three doublets (0^-,1^-), (0^+,1^+) and (1^+,2^+) of heavy mesons are studied with ligh cone QCD sum rules in the leading order of heavy quark effective theory. The ambiguity due to the presence of two distinct 1^+ states are solved. 
Yuan-Ben Dai and Shi-Lin Zhu