Sl. Zhu et Yb. Dai, RHO-DECAY WIDTHS OF EXCITED HEAVY MESONS FROM LIGHT-CONE QCD SUM-RULES IN THE LEADING ORDER OF HQET - ART. NO. 094033, Physical review. D. Particles and fields, 5809(9), 1998, pp. 4033
The couplings and decay widths of the processes (1(+),2(+))-->(0(-),1(
-))+rho are studied with the light-cone QCD sum rules in the leading o
rder of heavy quark effective theory. These processes are employed to
estimate the two pion transition widths of the (1(+),2(+)) doublet thr
ough the low mass tail of the rho resonance. The ambiguity due to the
presence of two distinct 1(+) states is solved. Our calculation shows
that the two pion decay widths of the (1(+),2(+)) doublets are much sm
aller than the single pion decay widths. However, the B-1,B-2 mesons
should also have significant two pion decay widths around 1.5 MeV. [S0
556-2821(98)07621-8].