arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新，休息一下吧，周末愉快~~
arXiv 1303.2615nucl-ex
收藏

在CLAS下测量的$γp \to K^{*+} Λ$和$γp \to K^{*+} Σ^{0}$反应的横截面

Cross sections for the $γp \to K^{*+} Λ$ and $γp \to K^{*+} Σ^{0}$ reactions measured at CLAS

W. Tang, K. Hicks, D. Keller, S. H. Kim, H. C. Kim

备注：
15 pages, 24 figures
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

第一个高统计截面的反应$γp \to K^{*+} Λ$和$γp \to K^{*+} Σ^0$测量使用CLAS探测器在阈值和3.9 GeV之间的光子能量在托马斯·杰斐逊国家加速器设施。微分截面在整个范围内的质心角，$θ^{CM}_{K^{*+}}$，然后拟合勒让德多项式提取总截面。将$K^{*+}Λ$最终状态的结果分别与同量异位素模型和Regge模型中的两种不同计算进行比较。理论计算显着低估了$K^{*+} Λ$总截面之间的2.1和2.6 GeV，但在更高的光子能量与目前的数据更好的协议。

英文摘要：

The first high-statistics cross sections for the reactions $γp \to K^{*+} Λ$ and $γp \to K^{*+} Σ^0$ were measured using the CLAS detector at photon energies between threshold and 3.9 GeV at the Thomas Jefferson National Accelerator Facility. Differential cross sections are presented over the full range of the center-of-mass angles, $θ^{CM}_{K^{*+}}$, and then fitted to Legendre polynomials to extract the total cross section. Results for the $K^{*+}Λ$ final state are compared with two different calculations in an isobar and a Regge model, respectively. Theoretical calculations significantly underestimate the $K^{*+} Λ$ total cross sections between 2.1 and 2.6 GeV, but are in better agreement with present data at higher photon energies.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

↑