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题名: A possible NN*(1440) quasi-molecular state
作者: Zhao, L ;  Shen, PN ;  Zhang, YJ ;  Zou, BS
刊名: EUROPEAN PHYSICAL JOURNAL A
出版日期: 2013
卷号: 49, 期号:5, 页码:59
关键词: MESON ;  ENHANCEMENTS
学科分类: Physics
通讯作者: Zhao, L (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
部门归属: [Zhao, Lu; Shen, Peng-Nian; Zou, Bing-Song] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; [Zhao, Lu; Zou, Bing-Song] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Shen, Peng-Nian] Guangxi Normal Univ, Coll Phys & Technol, Guilin 541004, Peoples R China; [Shen, Peng-Nian; Zhang, Yin-Jie; Zou, Bing-Song] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China; [Zhang, Yin-Jie] Hebei Univ, Dept Phys, Baoding 071002, Peoples R China; [Zou, Bing-Song] Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: Inspired by the recent observation of a narrow resonance-like structure around 2360 MeV in the pn -> d pi(0)pi(0) cross section, the possibility of forming a NN*(1440) quasi-molecular state is investigated by using a meson exchange model in which the pi, sigma, rho and omega exchanges in t- and u-channels are considered. By adopting the coupling constants extracted from the relevant NN scattering and N*(1440) decay data, it is found that a deuteron-like quasi-molecular state of NN*(1440) with a binding energy in the range of 2 similar to 67 MeV can be formed. Therefore, it is speculated that the observed structure around 2360 MeV might be or may have a large component of the NN*(1440) quasi-molecular state.
资助者: National Natural Science Foundation of China [10975038, 11035006, 11165005, 11121092, 11261130311]; DFG [CRC110]; NSFC; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000321430600002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15376
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Zhao, L,Shen, PN,Zhang, YJ,et al. A possible NN*(1440) quasi-molecular state[J]. EUROPEAN PHYSICAL JOURNAL A,2013,49(5):59.
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