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Distinguishing near-threshold pole effects from cusp effects
Zhou, ZY; Xiao, ZG; Zhou, ZY (reprint author), Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China.
2015
发表期刊PHYSICAL REVIEW D
卷号92期号:9页码:94024
文章类型Article
摘要We 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.
学科领域Astronomy & Astrophysics ; Physics
资助者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] ; 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] ; National Natural Science Foundation of China [11375044, 11105138, 11235010, 11575177] ; National Natural Science Foundation of China [11375044, 11105138, 11235010, 11575177]
DOIhttp://dx.doi.org/10.1103/PhysRevD.92.094024
关键词[WOS]STATES
收录类别SCI
语种英语
资助者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] ; 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] ; National Natural Science Foundation of China [11375044, 11105138, 11235010, 11575177] ; National Natural Science Foundation of China [11375044, 11105138, 11235010, 11575177]
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/20787
专题理论物理所SCI论文
通讯作者Zhou, ZY (reprint author), Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China.
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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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