Calculation of mass of Y (4140) by introducing mixed molecule state in quark model | |
Chen, XZ; Lu, XF; Shi, RB; Guo, XR | |
刊名 | NUCLEAR PHYSICS B |
2016 | |
卷号 | 909页码:243-259 |
关键词 | BETHE-SALPETER-EQUATION QCD SYSTEM |
DOI | http://dx.doi.org/10.1016/j.nuclphysb.2016.05.009 |
英文摘要 | Using the general form of the Bethe-Salpeter wave functions for the bound states consisting of two vector fields given in our previous work, we investigate the molecular state composed of D-s*(+) D-s*(-). However, for the SU(3) symmetry the component D-s*(+) D-s*(-) is coupled with the other components D*(0)(D) over bar*(0) and D*(+) D*(-). Then we interpret the internal structure of the observed Y(4140) state as a mixed state of pure molecule states D*(0)(D) over bar*(0), D*(+) D*(-) and D-s*(+) D-s*(-) with quantum numbers J(P) = 0(+). In this paper, the operator product expansion is used to introduce the nonperturbative contribution from the vacuum condensates into the interaction between two heavy mesons. The calculated mass of Y (4140) is consistent with the experimental value, and we conclude that it is a more reasonable scenario to explain the structure of Y (4140) as a mixture of pure molecule states. (C) 2016 The Authors. Published by Elsevier B.V. |
学科主题 | Physics |
语种 | 英语 |
资助机构 | A project of Shandong Province Higher Education Science and Technology program [J14LI58] ; Science and Technology Development Plan Project of Taian City [2015NS1048] |
内容类型 | 期刊论文 |
源URL | [http://ir.itp.ac.cn/handle/311006/23047] |
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.Shandong Univ Sci & Technol, Dept Fdn Courses, Tai An 271019, Shandong, Peoples R China 2.Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China 4.CCAST World Lab, POB 8730, Beijing 100080, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, XZ,Lu, XF,Shi, RB,et al. Calculation of mass of Y (4140) by introducing mixed molecule state in quark model[J]. NUCLEAR PHYSICS B,2016,909:243-259. |
APA | Chen, XZ,Lu, XF,Shi, RB,&Guo, XR.(2016).Calculation of mass of Y (4140) by introducing mixed molecule state in quark model.NUCLEAR PHYSICS B,909,243-259. |
MLA | Chen, XZ,et al."Calculation of mass of Y (4140) by introducing mixed molecule state in quark model".NUCLEAR PHYSICS B 909(2016):243-259. |
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