Knowledge Management System of Institute of Theoretical Physics, CAS
Sakai, Shuntaro; Jing, Hao-Jie; Guo, Feng-Kun
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| 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 | |
| Source Publication | PHYSICAL REVIEW D
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| Language | 英语 |
| Keyword | DECAYS DISTRIBUTIONS |
| Abstract | 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. |
| 2020 | |
| ISSN | 2470-0010 |
| Volume | 102Issue:11Pages:114041 |
| Cooperation Status | 国内 |
| Subject Area | Astronomy & Astrophysics ; Physics |
| MOST Discipline Catalogue | Astronomy & Astrophysics ; Physics, Particles & Fields |
| DOI | 10.1103/PhysRevD.102.114041 |
| Indexed By | SCIE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/27437 |
| Collection | SCI期刊论文 |
| Affiliation | 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 |
| Recommended Citation 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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| File Name/Size | DocType | Version | Access | License | ||
| Possible precise mea（1843KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | Application Full Text | |
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