奇特强子态和含有一个重夸克的强子激发态的研究

项目名称： 奇特强子态和含有一个重夸克的强子激发态的研究

项目编号： No.11475111

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 张爱林

作者单位： 上海大学

项目金额： 80万元

中文摘要： 本项目将利用QCD求和规则、3P0强衰变模型，基于重夸克对称型性的理论和全息QCD理论等研究1.0-3.0 GeV能区内的胶子球、多夸克态等奇特强子态，和含有一个重夸克的强子激发态的质量谱和强衰变规律等，精确检验和发展强子物理研究的这些模型和方法。简言之，即计划利用QCD求和规则计算含有两个重夸克的夸克对关联(diquark)的质量谱，并在组分夸克模型内系统地计算各类四夸克态和其它类型的多夸克态的质量谱。也计划尝试结合基于重夸克对称性的理论和3P0强衰变模型研究含有一个重夸克的强子激发态的强衰变规律，探索重子内部存在夸克对关联的可能性和介子激发态之间的混合规律。还计划利用全息QCD理论尝试赝标量胶子球和含有一个重夸克的重子激发态的质量谱和衰变规律的研究。我们将密切关注BESIII、B工厂、LHCb和PANDA等实验组的最新实验结果，对新观察到的但还未被确定身份的共振态进行系统的研究和归类。

中文关键词： 强子物理；量子色动力学；新强子态；强子谱；粲偶素

英文摘要： In the framework of QCD sum rule, 3P0 strong decay model, theory based on heavy quark symmetry, and holographic QCD et al., we will explore the mass spectra and strong decays of exotic hadrons such as glueballs, multiquark states in the energy region 1.0-3.0 GeV, and the excited hadrons with a heavy quark. We expect these explorations to give more facts on the application of these theoretical approaches, and hope to contribute to their developments. In short, we will calculate the masses of diquarks with two heavy quarks within QCD sum rule, and systematically calculate the mass spectra of all kinds of four-quark states and some other multi-quark states. We will study the features of strong decays of excited mesons with a heavy quark in the framework of 3P0 model and a theory based on heavy quark symmetry. We hope to find a possible hint of diquark in baryons and the mixing effects between excited mesons. We will calculate the masses of pseudo-scalar glueball and excited baryons with a heavy quark in holographic QCD. We will pay attention to the new experimental results from BESIII, B factories, LHCb and PANDA et al., and give our analyses and assignments to the new resonances which have not been identified.

英文关键词： hadron physics;QCD;new hadrons;hadronic spectroscopy;quarkonium