A coupled-channel lattice study of the resonance-like structure Z(c)(3900)

doi:10.1088/1674-1137/43/10/103103

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	A coupled-channel lattice study of the resonance-like structure Z(c)(3900)
	Chen, Ting ; Chen, Ying 9,10; Gong, Ming 9,10; Liu, Chuan 7,11; Liu, Liuming 8,12; Liu, Yu-Bin ; Liu, Zhaofeng 9,10; Ma, Jian-Ping ; Werner, Markus 3,4; Zhang, Jian-Bo
刊名	CHINESE PHYSICS C
	2019
卷号	43 期号:10 页码:103103
关键词	QUANTUM-FIELD THEORIES VOLUME DEPENDENCE ENERGY-SPECTRUM MATRIX STATES
ISSN号	1674-1137
DOI	10.1088/1674-1137/43/10/103103
英文摘要	In this exploratory study, near-threshold scattering of D and (D) over bar* meson is investigated using lattice QCD with N-f = 2+1+1 twisted mass fermion configurations. The calculation is performed in the coupled-channel Luscher finite-size formalism. The study focuses on the channel with I-G (J(PC)) = 1(+)(1(+-)) where the resonance-like structure Z(c)(3900) was discovered. We first identify the two most relevant channels and the lattice study is performed in the two-channel scattering model. Combined with the two-channel Ross-Shaw theory, scattering parameters are extracted from the energy levels by solving the generalized eigenvalue problem. Our results for the scattering length parameters suggest that for the particular lattice parameters that we studied, the best fit parameters do not correspond to the peak in the elastic scattering cross-section near the threshold. Furthermore, in the zero-range Ross-Shaw theory, the scenario of a narrow resonance close to the threshold is disfavored beyond the 3 sigma level.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/26929]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 4.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 5.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 6.Zhejiang Univ, Dept Phys, Hangzhou 311027, Zhejiang, Peoples R China 7.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 8.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 9.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 10.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Chen, Ting,Chen, Ying,Gong, Ming,et al. A coupled-channel lattice study of the resonance-like structure Z(c)(3900)[J]. CHINESE PHYSICS C,2019,43(10):103103.
APA	Chen, Ting.,Chen, Ying.,Gong, Ming.,Liu, Chuan.,Liu, Liuming.,...&Zhang, Jian-Bo.(2019).A coupled-channel lattice study of the resonance-like structure Z(c)(3900).CHINESE PHYSICS C,43(10),103103.
MLA	Chen, Ting,et al."A coupled-channel lattice study of the resonance-like structure Z(c)(3900)".CHINESE PHYSICS C 43.10(2019):103103.