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

文献类型：期刊论文

作者Chen, Ting1; Chen, Ying2,3; Gong, Ming2,3; Liu, Chuan1,4,5; Liu, Liuming6,7; Liu, Yu-Bin8; Liu, Zhaofeng2,3; Ma, Jian-Ping9; Werner, Markus10,11; Zhang, Jian-Bo12
刊名CHINESE PHYSICS C
出版日期2019-10-01
卷号43期号:10页码:14
ISSN号1674-1137
关键词Luescher formalism lattice QCD computation exotic mesons
DOI10.1088/1674-1137/43/10/103103
通讯作者Liu, Chuan(liuchuan@pku.edu.cn)
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.
WOS关键词QUANTUM-FIELD THEORIES ; VOLUME DEPENDENCE ; ENERGY-SPECTRUM ; MATRIX ; STATES
资助项目Ministry of Science and Technology of China (MSTC) under 973 project Systematic studies on light hadron spectroscopy[2015CB856702] ; NSFC[CRC 110] ; NSFC[11621131001] ; DFG[TRR 110] ; National Science Foundation of China (NSFC)[11775229] ; National Science Foundation of China (NSFC)[11875169] ; Youth Innovation Promotion Association of CAS[2015013] ; Key Research Program of the Chinese Academy of Sciences[XDPB09]
WOS研究方向Physics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000487562700004
资助机构Ministry of Science and Technology of China (MSTC) under 973 project Systematic studies on light hadron spectroscopy ; NSFC ; DFG ; National Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of CAS ; Key Research Program of the Chinese Academy of Sciences
源URL[http://119.78.100.186/handle/113462/132682]  
专题中国科学院近代物理研究所
通讯作者Liu, Chuan
作者单位1.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China
4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
5.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
6.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China
9.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
10.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany
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):14.
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),14.
MLA Chen, Ting,et al."A coupled-channel lattice study of the resonance-like structure Z(c)(3900)".CHINESE PHYSICS C 43.10(2019):14.

入库方式： OAI收割

来源：近代物理研究所

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