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Could the near-threshold XYZ states be simply kinematic effects?
Guo, FK; Hanhart, C; Wang, Q; Zhao, Q; Zhao Q(赵强)
2015
发表期刊PHYSICAL REVIEW D
卷号91期号:5页码:51504
摘要We demonstrate that the spectacular structures discovered recently in various experiments and named as X, Y and Z states cannot be purely kinematic effects. Their existence necessarily calls for nearby poles in the S matrix and they therefore qualify as states. We propose a way of distinguishing kinematic cusp effects from genuine S-matrix poles: the kinematic threshold cusp cannot produce a narrow peak in the invariant mass distribution in the elastic channel in contrast with a genuine S-matrix pole.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.91.051504
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000351733600001
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被引频次:39[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228366
专题理论物理室
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Guo, FK,Hanhart, C,Wang, Q,et al. Could the near-threshold XYZ states be simply kinematic effects?[J]. PHYSICAL REVIEW D,2015,91(5):51504.
APA Guo, FK,Hanhart, C,Wang, Q,Zhao, Q,&赵强.(2015).Could the near-threshold XYZ states be simply kinematic effects?.PHYSICAL REVIEW D,91(5),51504.
MLA Guo, FK,et al."Could the near-threshold XYZ states be simply kinematic effects?".PHYSICAL REVIEW D 91.5(2015):51504.
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