First observation of gamma gamma -> p(p)over-barK(+)K(-) and search for exotic baryons in pK systems | |
Belle Collaboration | |
刊名 | PHYSICAL REVIEW D |
2016 | |
卷号 | 93期号:11 |
DOI | 10.1103/PhysRevD.93.112017 |
英文摘要 | The process gamma gamma -> p (p) over barK(+)K(-) and its intermediate processes are measured for the first time using a 980 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The production of p (p) over barK(+)K(-) and a Lambda(1520)(0) ((Lambda) over bar (1520)(0)) signal in the pK(-) ((p) over barK(+)) invariant mass spectrum are clearly observed. However, no evidence for an exotic baryon near 1540 MeV/c(2), denoted as Theta(1540)(0) ((Theta) over bar (1540)(0)) or Theta(1540)(++) (Theta(1540)(--)), is seen in the pK(-) ((p) over barK(+)) or pK(+) ((p) over barK(-)) invariant mass spectra. Cross sections for gamma gamma -> p (p) over barK(+)K(-), Lambda(1520)(0)(p) over barK(+) + c.c. and the products sigma(gamma gamma -> Theta(1540)(0)(p) over barK(+) + c.c.)B(Theta(1540)(0) -> pK(-)) and sigma(gamma gamma -> Theta(1540)(++)(p) over barK(-) + c.c.)B(Theta(1540)(++) -> pK(+)) are measured. We also determine upper limits on the products of the chi(c0) and chi(c2) two-photon decay widths and their branching fractions to p (p) over barK(+)K(-) at the 90% credibility level. |
语种 | 英语 |
WOS记录号 | WOS:000378820600002 |
内容类型 | 期刊论文 |
源URL | [http://ir.ihep.ac.cn/handle/311005/260957] |
专题 | 高能物理研究所_实验物理中心 |
作者单位 | 中国科学院高能物理研究所 |
推荐引用方式 GB/T 7714 | Belle Collaboration. First observation of gamma gamma -> p(p)over-barK(+)K(-) and search for exotic baryons in pK systems[J]. PHYSICAL REVIEW D,2016,93(11). |
APA | Belle Collaboration.(2016).First observation of gamma gamma -> p(p)over-barK(+)K(-) and search for exotic baryons in pK systems.PHYSICAL REVIEW D,93(11). |
MLA | Belle Collaboration."First observation of gamma gamma -> p(p)over-barK(+)K(-) and search for exotic baryons in pK systems".PHYSICAL REVIEW D 93.11(2016). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论