Couplings of pions to higher positive parity heavy mesons

Abstract

We evaluate the couplings of pions in the transitions of positive parity heavy mesons, (1+,2+) and (0+,1+), to negative parity ones (0-,1-) using a technique which is not limited to the soft-pion limit. This is made through a constituent quark-meson model (the CQM model) where the amplitudes are obtained by quark loops with mesons on the external lines. The results are in good agreement with experimental data.

Comments: 10 pages, 1 figure, LaTeX, style file JHEP, minor corrections and discussion of new experimental data added