Interpretation of the LHCb P-c States as Hadronic Molecules and Hints of a Narrow P-c (4380)
文献类型：期刊论文
| 作者 | Du, Meng-Lin; Baru, Vadim7,8; Guo, Feng-Kun ; Hanhart, Christoph; Meissner, Ulf-G.; Oller, Jose A.; Wang, Qian3,5
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| 刊名 | PHYSICAL REVIEW LETTERS
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| 出版日期 | 2020 |
| 卷号 | 124期号:7页码:72001 |
| ISSN号 | 0031-9007 |
| 关键词 | HIDDEN-CHARM PENTAQUARK |
| DOI | 10.1103/PhysRevLett.124.072001 |
| 英文摘要 | Three hidden-charm pentaquark P-c states, P-c(4312), P-c(4440), and P-c(4457) were revealed in the A(b)(0) -> J/psi pK(-) process measured by LHCb using both run I and run II data. Their nature is under lively discussion, and their quantum numbers have not been determined. We analyze the J/psi p invariant mass distributions under the assumption that the crossed-channel effects provide a smooth background. For the first time, such an analysis is performed employing a coupled-channel formalism with the scattering potential involving both one-pion exchange as well as short-range operators constrained by heavy quark spin symmetry. We find that the data can be well described in the hadronic molecular picture, which predicts seven Sigma((*))(c) (D) over bar ((*)) molecular states in two spin multiplets, such that the P-c(4312) is mainly a Sigma(c)(D) over bar bound state with J(P) = 1/2(-), while P-c(4440) and P-c(4457) are Sigma(c)(D) over bar* hound states with quantum numbers 3/2(-) and 1/2(-), respectively. We also show that there is evidence for a narrow Sigma(c)*(D) over bar hound state in the data which we call P-c(4380), different from the broad one reported by LHCb in 2015. With this state included, all predicted Sigma(c)(D) over bar, Sigma(c)*(D) over bar, and Sigma(c)(D) over bar* hadronic molecules are seen in the data, while the missing three Sigma(c)*(D) over bar* states are expected to be found in future runs of the LHC or in photoproduction experiments. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27009]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Hanhart, Christoph; Meissner, Ulf-G.] Forschungszentrum Julich, Ctr Hadron Phys, D-52425 Julich, Germany 2.Meissner, Ulf-G.] Tbilisi State Univ, Tbilisi 0186, Georgia 3.Oller, Jose A.] Univ Murcia, Dept Fis, E-30071 Murcia, Spain 4.Chinese Acad Sci, Inst High Energy Phys, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China 5.South China Normal Univ, Inst Quantum Matter, Guangdong Prov Key Lab Nucl Sci, Guangzhou 510006, Peoples R China 6.[Du, Meng-Lin; Baru, Vadim; Meissner, Ulf-G.] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 7.Du, Meng-Lin; Baru, Vadim; Meissner, Ulf-G.] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 8.Kurchatov Inst, Inst Theoret & Expt Phys NRC, Moscow 117218, Russia 9.Russian Acad Sci, PN Lebedev Phys Inst, Leninskiy Prospect 53, Moscow 119991, Russia 10.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Meng-Lin,Baru, Vadim,Guo, Feng-Kun,et al. Interpretation of the LHCb P-c States as Hadronic Molecules and Hints of a Narrow P-c (4380)[J]. PHYSICAL REVIEW LETTERS,2020,124(7):72001. |
| APA | Du, Meng-Lin.,Baru, Vadim.,Guo, Feng-Kun.,Hanhart, Christoph.,Meissner, Ulf-G..,...&Wang, Qian.(2020).Interpretation of the LHCb P-c States as Hadronic Molecules and Hints of a Narrow P-c (4380).PHYSICAL REVIEW LETTERS,124(7),72001. |
| MLA | Du, Meng-Lin,et al."Interpretation of the LHCb P-c States as Hadronic Molecules and Hints of a Narrow P-c (4380)".PHYSICAL REVIEW LETTERS 124.7(2020):72001. |
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来源：理论物理研究所
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