On the mass differences between the scalar and pseudoscalar heavy-light mesons
arXiv:hep-ph/0406296 · doi:10.1016/j.physletb.2004.08.027
Abstract
We discuss the recent experimental observation which suggested that the mass difference between the scalar and pseudoscalar heavy-light mesons is larger for the non-strange states than for the strange ones. After computing the chiral corrections in the heavy quark limit we show that, contrary to experiment, the mass difference in the non-strange case should be smaller.
10 pages, 2 figures