Decay Widths of Excited Heavy Mesons From QCD Sum Rules at the Leading Order of HQET
arXiv:hep-ph/9705223 · doi:10.1103/PhysRevD.58.094032 10.1103/PhysRevD.59.059901
Abstract
The widths for pionic decays of lowest two excited doublets (0^+,1^+) and (1^+,2^+) of heavy mesons are studied with QCD sum rules in the leading order of heavy quark effective theory. The ambiguity due to presence of two distinct 1^+ states are solved. The soft pion approximation is not used.
RevTeX, 16 pages including 1 figure; minor changes, final version to appear in Physical Review D