Hidden-charm pentaquark state in Lambda(0)(b) -> J/psi p pi(-) decay
文献类型：期刊论文
| 作者 | Wang, E; Chen, HX; Geng, LS; Li, DM (reprint author), Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Henan, Peoples R China.; Geng, LS (reprint author), Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China.; Geng, LS (reprint author), Beihang Univ, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China.; Geng, LS (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.; Oset, E (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.; Oset, E (reprint author), Univ Valencia, Ctr Mixto, CSIC, Inst Invest Paterna,Dept Fis Teor, Apartado 22085, Valencia 46071, Spain.; Oset, E (reprint author), Univ Valencia, Ctr Mixto, CSIC, Inst Invest Paterna,IFIC, Apartado 22085, Valencia 46071, Spain. |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2016 |
| 卷号 | 93期号:9页码:94001 |
| DOI | http://dx.doi.org/10.1103/PhysRevD.93.094001 |
| 英文摘要 | We study here the A(b)(0) -> J/psi p pi(-) reaction in analogy to the A(b)(0) -> J/psi pK(-) one, and we note that in both decays there is a sharp structure (dip or peak) in the J/psi p mass distribution around 4450 MeV, which is associated in the A(b)(0) -> J/psi pK(-) experiment to an exotic pentaquark baryonic state, although in J/psi p pi(-) it shows up with relatively low statistics. We analyze the A(b)(0) -> J/psi p pi(-) interaction along the same lines as the A(b)(0) -> J/psi pK(-) one, with the main difference stemming from the reduced Cabibbo strength in the former and the consideration of the pi(-)p final state interaction instead of the K(-)p one. We find that with a minimal input, introducing the pi(-)p and J/psi p interaction in S-wave with realistic interactions, and the empirical P-wave and D-wave contributions, one can accomplish a qualitative description of the pi(-)p and J/psi p mass distributions. More importantly, the peak structure followed by a dip of the experimental J/psi p mass distribution is reproduced with the same input as used to describe the data of A(b)(0) -> J/psi pK(-) reaction. The repercussion for the triangular singularity mechanism, invoked in some works to explain the pentaquark peak, is discussed. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21665]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Chen, HX; Li, DM (reprint author), Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Henan, Peoples R China.; Geng, LS (reprint author), Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China.; Geng, LS (reprint author), Beihang Univ, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China.; Geng, LS (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.; Oset, E (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.; Oset, E (reprint author), Univ Valencia, Ctr Mixto, CSIC, Inst Invest Paterna,Dept Fis Teor, Apartado 22085, Valencia 46071, Spain.; Oset, E (reprint author), Univ Valencia, Ctr Mixto, CSIC, Inst Invest Paterna,IFIC, Apartado 22085, Valencia 46071, Spain. |
| 推荐引用方式 GB/T 7714 | Wang, E,Chen, HX,Geng, LS,et al. Hidden-charm pentaquark state in Lambda(0)(b) -> J/psi p pi(-) decay[J]. PHYSICAL REVIEW D,2016,93(9):94001. |
| APA | Wang, E.,Chen, HX.,Geng, LS.,Li, DM .,Geng, LS .,...&Li, DM.(2016).Hidden-charm pentaquark state in Lambda(0)(b) -> J/psi p pi(-) decay.PHYSICAL REVIEW D,93(9),94001. |
| MLA | Wang, E,et al."Hidden-charm pentaquark state in Lambda(0)(b) -> J/psi p pi(-) decay".PHYSICAL REVIEW D 93.9(2016):94001. |
入库方式： OAI收割
来源：理论物理研究所
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