Possible precise measurements of the X(3872) mass with the e(+)e(-) -> pi(0)gamma X(3872) and p<(p)over bar> -> gamma X(3872) reactions
文献类型：期刊论文
| 作者 | Sakai, Shuntaro; Jing, Hao-Jie; Guo, Feng-Kun
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2020 |
| 卷号 | 102期号:11页码:114041 |
| 关键词 | DECAYS DISTRIBUTIONS |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.102.114041 |
| 英文摘要 | It was recently proposed that the X(3872) binding energy, the difference between the D-0(D) over bar*(0) threshold and the X(3872) mass, can be precisely determined by measuring the gamma X(3872) line shape from a short-distance D*(0)(D) over bar*(0) source produced at high-energy experiments. Here, we investigate the feasibility of such a proposal by estimating the cross sections for the e+e- -> pi(0)gamma X(3872) and p (p) over bar -> gamma X(3872) processes considering the D*(0)*(D) over bar*D-0(0)/(D) over bar*D-0*(0)(D) over bar (0) triangle loops. These loops can produce a triangle singularity slightly above the D*(0)(D) over bar*(0) threshold. It is found that the peak structures originating from the D*(0)(D) over bar*(0) threshold cusp and the triangle singularity are not altered much by the energy dependence introduced by the e+e- -> pi D-0*(0)(D) over bar *0 and p (p) over bar -> (D) over bar*D-0*0 production parts or by considering a finite width for the X(3872). We find that sigma(e(+)e(-) -> pi(0)gamma X(3872)) x Br(X(3872) -> pi(+)pi-J/psi ) is O(0.1 fb) with the gamma X(3872) invariant mass integrated from 4.01 to 4.02 GeV and the c.m. energy of the e(+)e(-) pair fixed at 4.23 GeV. The cross section sigma(p (p) over bar -> gamma X(3872)) x Br(X(3872) -> pi(+)pi(-) J/psi) is estimated to be of O(10 pb). Our results suggest that a precise measurement of the X(3872) binding energy can be done at PANDA. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27437]  |
| 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.[Sakai, Shuntaro 2.Jing, Hao-Jie 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.[Jing, Hao-Jie 5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sakai, Shuntaro,Jing, Hao-Jie,Guo, Feng-Kun. Possible precise measurements of the X(3872) mass with the e(+)e(-) -> pi(0)gamma X(3872) and p<(p)over bar> -> gamma X(3872) reactions[J]. PHYSICAL REVIEW D,2020,102(11):114041. |
| APA | Sakai, Shuntaro,Jing, Hao-Jie,&Guo, Feng-Kun.(2020).Possible precise measurements of the X(3872) mass with the e(+)e(-) -> pi(0)gamma X(3872) and p<(p)over bar> -> gamma X(3872) reactions.PHYSICAL REVIEW D,102(11),114041. |
| MLA | Sakai, Shuntaro,et al."Possible precise measurements of the X(3872) mass with the e(+)e(-) -> pi(0)gamma X(3872) and p<(p)over bar> -> gamma X(3872) reactions".PHYSICAL REVIEW D 102.11(2020):114041. |
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来源：理论物理研究所
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