2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/177743The shift of the p-wave $D_s$ meson mass due to coupling to the DK channel is calculated without fitting parameters using the chiral Lagrangian. As a result the original $Q\bar q$ mass 2.490 MeV generically calculated in the relativistic quark models is shifted down to the experimental value 2317 MeV. With the same Lagrangian the shift of the radial excited $1^-$ level is much smaller, while the total width $Γ> 100$ MeV and the width ratio is in contradiction with the $D^*(2632)$ state observed by SELEX group.9 pages, 2 figuresHigh Energy Physics - PhenomenologyHigh Energy Physics - ExperimentHigh Energy Physics - Latticetext