Nature of the D0* meson in Dπ scattering with chiral symmetry

We study the nature of the scalar D-0* meson from the viewpoint of chiral symmetry. With the linear representation of chiral symmetry, we construct the D pi scattering amplitude satisfying the chiral low-energy theorem, in which the D-0* meson appears as an s-wave resonance. We show that the properties of the D-0* meson can be successfully reproduced as the chiral partner of the D meson coupled with the D pi scattering states. At the same time, we find that the spectral function and the pole position of D-0* are not very sensitive to the reduction of the chiral condensate, indicating the importance of the dressing of the bare state by the D pi molecular component.