Effective Chiral Symmetry Restoration for Heavy-Light Mesons
  We study the spectrum of heavy-light mesons within a model with linear instantaneous confining potential. The single-quark Green function and spontaneous breaking of chiral symmetry are obtained from the Schwinger-Dyson (gap) equation. For the meson spectrum we derive a Bethe-Salpeter equation (BSE). We solve thiss equation numerically in the heavy-light limit and obtain effective restoration of chiral and $U(1)_A$ symmetries at large spins. 
V. K. Sazonov, G. Schaffernak, R. F. Wagenbrunn
hep-ph nucl-th