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arXiv · 1904.00589

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

Takumi Sugiura·Tetsuo Hyodo
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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.

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Takumi Sugiura, Tetsuo Hyodo. 2019-04-01. Nature of the D_0 meson in the D pi scattering with chiral symmetry. https://doi.org/10.1103/physrevc.99.065201

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