| 具有双Y-型结构的Θ+的研究 |
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| 引用本文： | 赵洪明,曾卓全,沈彭年,丁亦兵,李学潜.具有双Y-型结构的Θ+的研究[J].中国物理 C,2006,30(5):405-411. |
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| 作者姓名： | 赵洪明 曾卓全 沈彭年 丁亦兵 李学潜 |
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| 作者单位： | 中国科学院高能物理研究所，中国科学院高能物理研究所，兰州重离子加速器国家实验室原子核理论中心，中国科学院研究生院物理学部，南开大学物理学院 北京 100049 中国科学院研究生院物理学部 北京 100049，北京 100049 中国科学院研究生院物理学部 北京 100049，兰州 730000 中国科学院理论物理所 北京 100080 中国科学院高能物理研究所北京 100049，北京 100049，天津 300071 中国科学院理论物理所 北京 100080 |
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| 基金项目： | 中国科学院资助项目
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中国科学院方向性项目
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广东省博士启动基金
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中国科学院知识创新工程项目 |
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| 摘 要： | 采用由单胶子交换产生的库仑势加上流管模型给出的双Y-型禁闭势之和的相互作用势,分别计算了正、负宇称态的Θ+的质量, 给出负宇称态Θ+的质量为1.935GeV, 正宇称态Θ+的质量为2.082GeV. 其中较低的负宇称态仍比实验给出的Θ+(1540)的共振峰高出近400MeV.
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| 关 键 词： | 五夸克态 流管模型 Y-型禁闭势 |
| 收稿时间： | 2005-11-21 |
| 修稿时间： | 2005-11-212005-12-20 |
Θ+ with Double Y-Ansatz Confining Potential |
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| ZHAO Hong-Ming,ZENG Zhuo-Quan,SHEN Peng-Nian,DING Yi-Bing,LI Xue-Qian.Θ+ with Double Y-Ansatz Confining Potential[J].High Energy Physics and Nuclear Physics,2006,30(5):405-411. |
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| Authors: | ZHAO Hong-Ming ZENG Zhuo-Quan SHEN Peng-Nian DING Yi-Bing LI Xue-Qian |
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| Institution: | Institute of High Energy Physics, CAS, Beijing 100049, China;College of Physical Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;Institute of High Energy Physics, CAS, Beijing 100049, China;College of Physical Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China;Institute of Theoretical Physics, CAS, Beijing 100080, China;Institute of High Energy Physics, CAS, Beijing 100049, China;College of Physical Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;Department of Physics, Nankai University, Tianjin 300071, China;Institute of Theoretical Physics, CAS, Beijing 100080, China |
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| Abstract: | The mass of (?) in the qq - q - qq configuration is calculated by using a potential composed by a Coulomb potential originated from the One Gluon Exchange (OGE) and a double Y-mode confining potential extracted from the flux tube model. It is shown that the mass of the negative parity state of (?) is 1.935GeV, which is more than 300MeV higher than the reported experimental value of 1.540GeV. While the positive parity state of (?) has a mass of 2.082GeV, which is consistent with the result from the Lattice Quantum Chromodynamics (LQCD) calculation. With these masses, the reported (?) (1540) cannot be confirmed as a pentaquark state. |
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| Keywords: | pentaquark flux-tube model Y-mode confining potential |
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