Where Is the Lightest Charmed Scalar Meson?
文献类型：期刊论文
| 作者 | Du, Meng-Lin; Guo, Feng-Kun ; Hanhart, Christoph; Kubis, Bastian; Meissner, Ulf-G
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| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2021 |
| 卷号 | 126期号:19页码:192001 |
| 关键词 | HEAVY MESONS QUARK-MODEL SCATTERING AMPLITUDES RESONANCE DECAYS MASSES STATES |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.126.192001 |
| 英文摘要 | The lightest charmed scalar meson is known as the D-0*(2300), which is one of the earliest new hadron resonances observed at modern B factories. We show here that the parameters assigned to the lightest scalar D meson are in conflict with the precise LHCb data of the decay B- -> D+pi(-) pi(-) . On the contrary, these data can be well described by an unitarized chiral amplitude containing a much lighter charmed scalar meson, the D-0*(2100). We also extract the low-energy S-wave D pi phase of the decay B- -> D+pi(-) pi(-) - from the data in a model-independent way, and show that its difference from the D pi scattering phase shift can be traced back to an intermediate rho(-) exchange. Our work highlights that an analysis of data consistent with chiral symmetry, unitarity, and analyticity is mandatory in order to extract the properties of the ground-state scalar mesons in the singly heavy sector correctly, in analogy to the light scalar mesons f(0) (500) and K-0*(700). |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27538]  |
| 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.[Du, Meng-Lin 2.Kubis, Bastian 3.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 4.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 7.[Hanhart, Christoph 8.Forschungszentrum Julich, Inst Kernphys, Inst Adv Simulat, D-52425 Julich, Germany 9.Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany 10.Tbilisi State Univ, GE-0186 Tbilisi, Georgia |
| 推荐引用方式 GB/T 7714 | Du, Meng-Lin,Guo, Feng-Kun,Hanhart, Christoph,et al. Where Is the Lightest Charmed Scalar Meson?[J]. PHYSICAL REVIEW LETTERS,2021,126(19):192001. |
| APA | Du, Meng-Lin,Guo, Feng-Kun,Hanhart, Christoph,Kubis, Bastian,&Meissner, Ulf-G.(2021).Where Is the Lightest Charmed Scalar Meson?.PHYSICAL REVIEW LETTERS,126(19),192001. |
| MLA | Du, Meng-Lin,et al."Where Is the Lightest Charmed Scalar Meson?".PHYSICAL REVIEW LETTERS 126.19(2021):192001. |
入库方式： OAI收割
来源：理论物理研究所
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