An investigation of the Ds+π0-DK-Ds+η coupled channel dynamics

被引：4
|
作者：
Sassen, FP [1 ]
Krewald, S [1 ]
机构：
[1] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2005年 / 20卷 / 2-3期
关键词：
14.40.Lb charmed mesons; 36.10.-k exotic atoms and molecules; 11.80.Gw multichannel scattering;
D O I：
10.1142/S0217751X05022226
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 investigate the dynamics of the coupled channel system consisting of the D(s)(+)pi(0)-, DK-, and D-s(+) eta-channels. We find that in the isoscalar channel a DK-molecule is formed due to the attraction of the t-channel meson exchange potentials. This may explain the observations by BaBar, Cleo, Belle and others of a narrow D-s(J) state at 2317 MeV. We thoroughly investigate the influence of isospin breaking via mass differences, p omega-and pi eta-mixing on this molecule since within our model only isospin violating processes contribute to the width of the molecule. If the D-sJ(2317) is assumed to be a pure molecule we predict a width much smaller than the current experimental tipper limit.
引用
收藏
页码：705 / 707
页数：3
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