2016年3月1日
Interference effect between $φ$ and $Λ(1520)$ production channels in the $γp \rightarrow K^+K^-p$ reaction near threshold
Phys. Rev. Lett. 116, 232001 (2016)
- 巻
- 116
- 号
- 23
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.116.232001
The $\phi$-$\Lambda(1520)$ interference effect in the $\gamma p\to K^+K^-p$<br />
reaction has been measured for the first time in the energy range from 1.673 to<br />
2.173 GeV. The relative phases between $\phi$ and $\Lambda(1520)$ production<br />
amplitudes were obtained in the kinematic region where the two resonances<br />
overlap. The measurement results support strong constructive interference when<br />
$K^+K^-$ pairs are observed at forward angles, but destructive interference for<br />
proton emission at forward angles. Furthermore, the observed interference<br />
effect does not account for the $\sqrt{s}=2.1$ GeV bump structure in forward<br />
differential cross sections for $\phi$ photoproduction. This fact suggests<br />
possible exotic structures such as a hidden-strangeness pentaquark state, a new<br />
Pomeron exchange and rescattering processes via other hyperon states.
reaction has been measured for the first time in the energy range from 1.673 to<br />
2.173 GeV. The relative phases between $\phi$ and $\Lambda(1520)$ production<br />
amplitudes were obtained in the kinematic region where the two resonances<br />
overlap. The measurement results support strong constructive interference when<br />
$K^+K^-$ pairs are observed at forward angles, but destructive interference for<br />
proton emission at forward angles. Furthermore, the observed interference<br />
effect does not account for the $\sqrt{s}=2.1$ GeV bump structure in forward<br />
differential cross sections for $\phi$ photoproduction. This fact suggests<br />
possible exotic structures such as a hidden-strangeness pentaquark state, a new<br />
Pomeron exchange and rescattering processes via other hyperon states.
- リンク情報
-
- DOI
- https://doi.org/10.1103/PhysRevLett.116.232001
- arXiv
- http://arxiv.org/abs/arXiv:1603.00236
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000377338100006&DestApp=WOS_CPL
- Arxiv Url
- http://arxiv.org/abs/1603.00236v2
- Arxiv Url
- http://arxiv.org/pdf/1603.00236v2 本文へのリンクあり
- ID情報
-
- DOI : 10.1103/PhysRevLett.116.232001
- ISSN : 0031-9007
- arXiv ID : arXiv:1603.00236
- Web of Science ID : WOS:000377338100006