XYZ
类粲偶素的理论回顾

doi:10.3969/j.issn.0253-2778.2016.07.001

中国科学技术大学学报 ›› 2016, Vol. 46 ›› Issue (7): 533-540.DOI: 10.3969/j.issn.0253-2778.2016.07.001

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XYZ 类粲偶素的理论回顾

刘翔

1.兰州大学物理科学与技术学院，甘肃兰州 730000； 2.兰州大学与中国科学院近代物理研究所共建强子与CSR物理研究中心，甘肃兰州 730000

收稿日期:2015-11-30 修回日期:2016-04-20 出版日期:2016-07-31 发布日期:2016-07-31
作者简介:LIU Xiang, male, born in 1978, PhD/Prof. Research field: particle physics. E-mail: xiangliu@lzu.edu.cn

Theoretical review of XYZ

LIU Xiang

1.School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China; 2.Research Center for Hadron and CSR Physics, Lanzhou University & Institute of Modern Physics of CAS, Lanzhou 730000, China

Received:2015-11-30 Revised:2016-04-20 Online:2016-07-31 Published:2016-07-31

摘要/Abstract

摘要： 在过去的12年中，实验上发现了大量的类粲偶素.面对如此多新奇的态，理论学家们致力于去解释这些XYZ粒子内在的动力学机制.本文首先简短地回顾已发现的XYZ态，然后主要介绍我们组在XYZ类粲偶素理论研究中的一些工作，其中主要包括：① 将Y(3940)， Y(4140) 和 Y(4274) 解释为强子分子态；② Y(4260) 和 Y(4360)的非共振态解释；③ 将Y(3915)， Z(3930) 和 X(4350)这3个态解释为P波粲偶素；④ 初态单π发射机制和对Zc(3900)的研究.

关键词: 类粲偶素, 非微扰QCD, 唯象模型

Abstract: In the past 12 years, dozens of charmonium-like states have been reported in experiment. Facing so abundant novel phenomena, theorists have been hard at work to reveal the underlying mechanism relevant to these XYZ states. A concise review of the observed XYZ states is first given. Then, an introduction is presented to the theoretical progress made by our group in the study of XYZ states, which includes ① the hadronic molecular state explanations to Y(3940), Y(4140) and Y(4274); ② the non-resonant explanation to Y(4260) and Y(4360); ③ the P-wave charmonium assignment to Y(3915), Z(3930) and X(4350); ④ the initial single pion emission mechanism and the observation of Zc(3900).

Key words: charmonium-like states, non-perturbative QCD, phenomenological model

刘翔. XYZ 类粲偶素的理论回顾[J]. 中国科学技术大学学报, 2016, 46(7): 533-540.

LIU Xiang. Theoretical review of XYZ [J]. Journal of University of Science and Technology of China, 2016, 46(7): 533-540.

XYZ 类粲偶素的理论回顾

Theoretical review of XYZ

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