Nature of the D_0 meson in the D pi scattering with chiral symmetry

Abstract

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.

arXiv comment7 pages, 3 figures

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Cited by in corpus (3)

• Femtoscopic signatures of the lightest S-wave scalar open-charm mesons
• $D$ mesons as a probe of Casimir effect for chiral symmetry breaking
• Degeneracy patterns of chiral companions at finite temperature