On the mass differences between the scalar and pseudoscalar heavy-light mesons
Damir Becirevic, Svjetlana Fajfer, Sasa Prelovsek
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.
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