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Zhou, ZY; Xiao, ZG; Zhou, ZY (reprint author), Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China.
Distinguishing near-threshold pole effects from cusp effects
Source PublicationPHYSICAL REVIEW D
Language英语
AbstractWe make use of a unitarized coupled-channel model to analyze the mass distribution data of final states in production processes of X(4260). By analyzing the analytical structures of the decay amplitudes, we find that the line shape of the Z(c)(3900) signal is related to the combined effect of a pair of near-threshold "shadow" poles and the (D (D) over bar*)(+/-) thresholds, in which the third-sheet pole might provide a dominant contribution. As all the coupled channels effects are tuning off, the trajectories of these two poles suggest that the Z(c)(3900) might originate from the attractive interaction of (D*(D) over bar*)(+/-) through a long-distance interaction, e.g., pi-exchange interaction, as a "deuteron-like" state. There is no nearby pole structure corresponding to the Z(c)(4025) signal in the (D*(D) over bar*)(+/-) mass distribution.
2015
Volume92Issue:9Pages:94024
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevD.92.094024
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [11375044, 11105138, 11235010, 11575177] ; National Natural Science Foundation of China [11375044, 11105138, 11235010, 11575177] ; National Natural Science Foundation of China [11375044, 11105138, 11235010, 11575177] ; National Natural Science Foundation of China [11375044, 11105138, 11235010, 11575177]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/20787
Collection理论物理所科研产出_SCI论文
Corresponding AuthorZhou, ZY (reprint author), Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China.
Recommended Citation
GB/T 7714
Zhou, ZY,Xiao, ZG,Zhou, ZY . Distinguishing near-threshold pole effects from cusp effects[J]. PHYSICAL REVIEW D,2015,92(9):94024.
APA Zhou, ZY,Xiao, ZG,&Zhou, ZY .(2015).Distinguishing near-threshold pole effects from cusp effects.PHYSICAL REVIEW D,92(9),94024.
MLA Zhou, ZY,et al."Distinguishing near-threshold pole effects from cusp effects".PHYSICAL REVIEW D 92.9(2015):94024.
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