Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+)
文献类型：期刊论文
| 作者 | Sakai, Shuntaro; Guo, Feng-Kun ; Kubis, Bastian2,3
|
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2020 |
| 卷号 | 808页码:135623 |
| 关键词 | COUPLED-CHANNEL HEAVY BARYONS CHIRAL DYNAMICS QUARK-MODEL S-WAVE CUSPS RESONANCES CHARM |
| ISSN号 | 0370-2693 |
| 英文摘要 | The isovector and isoscalar NDs-wave scattering lengths are extracted by fitting to the LHCb data of the pD(0) invariant-mass distribution in the decay Lambda(b) -> pi(-) pD(0), making use of the cusp effect at the nD(+) threshold. The analysis is based on a coupled-channel nonrelativistic effective field theory. We find that the real part of the isovector ND scattering length is unnaturally large due to the existence of a near-threshold state with a mass around 2.8GeV. The state is consistent with the Sigma(c)(2800)(+) resonance observed at Belle. Our results suggest that it couples strongly to the ND channel in an s-wave, and that its quantum numbers are J(P)= 1/2(-). The strong cusp behavior at the nD(+) threshold can be verified using updated LHCb data. (C) 2020 The Author(s). Published by Elsevier B.V. |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27255]  |
| 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.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 2.Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany 3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sakai, Shuntaro,Guo, Feng-Kun,Kubis, Bastian. Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+)[J]. PHYSICS LETTERS B,2020,808:135623. |
| APA | Sakai, Shuntaro,Guo, Feng-Kun,&Kubis, Bastian.(2020).Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+).PHYSICS LETTERS B,808,135623. |
| MLA | Sakai, Shuntaro,et al."Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+)".PHYSICS LETTERS B 808(2020):135623. |
入库方式： OAI收割
来源：理论物理研究所
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