Triangle singularity in the B--> K- pi X-0 (3872) reaction and sensitivity to the X(3872) mass
文献类型：期刊论文
| 作者 | Sakai, Shuntaro; Oset, Eulogio3,4; Guo, Feng-Kun
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2020 |
| 卷号 | 101期号:5页码:54030 |
| 关键词 | ISOSPIN ANALYSIS BREAKING |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.101.054030 |
| 英文摘要 | We have done a study of the B--> K-pi X-0(3872) reaction by means of a triangle mechanism via the chain of reactions: B--> K-D*(0);(D) over bar*(0); D*(0)-> pi D-0(0); D-0(D) over bar*(0)-> X(3872). We show that this mechanism generates a triangle singularity in the pi X-0(3872) invariant mass for a very narrow window of the X(3872) mass, around the present measured values, and show that the peak positions and the shape of the mass distributions arc sensitive to the X(3872) mass, such that a measurement of the reaction can serve to improve on the present values of this mass. In particular, we point out that the X(3872) mass relative to the D-0(D) over bar*(0) threshold may be extracted from the asymmetry of the pi X-0 line shape. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27124]  |
| 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.Ctr Mixto Univ Valencia, CSIC Inst Invest Paterna, IFIC, Aptdo 22085, Valencia 46071, Spain 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China 4.Ctr Mixto Univ Valencia, CSIC Inst Invest Paterna, Dept Fis Teor, Aptdo 22085, Valencia 46071, Spain |
| 推荐引用方式 GB/T 7714 | Sakai, Shuntaro,Oset, Eulogio,Guo, Feng-Kun. Triangle singularity in the B--> K- pi X-0 (3872) reaction and sensitivity to the X(3872) mass[J]. PHYSICAL REVIEW D,2020,101(5):54030. |
| APA | Sakai, Shuntaro,Oset, Eulogio,&Guo, Feng-Kun.(2020).Triangle singularity in the B--> K- pi X-0 (3872) reaction and sensitivity to the X(3872) mass.PHYSICAL REVIEW D,101(5),54030. |
| MLA | Sakai, Shuntaro,et al."Triangle singularity in the B--> K- pi X-0 (3872) reaction and sensitivity to the X(3872) mass".PHYSICAL REVIEW D 101.5(2020):54030. |
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来源：理论物理研究所
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