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

被引：2
|
作者：
Sugiura, Takumi [1 ]
Hyodo, Tetsuo [2 ]
机构：
[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
[2] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan
来源：
PHYSICAL REVIEW C | 2019年 / 99卷 / 06期
关键词：
HEAVY MESONS; RESONANCES; DYNAMICS;
D O I：
10.1103/PhysRevC.99.065201
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
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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页数：7
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