p-p相互作用中Lambda/Sigma0产生截面比的能量依赖性
核实验
2009-03-20 v1
摘要
在COSY--11通过pp-->pK+Lambda/Sigma0反应对近阈值Lambda和Sigma0产生的测量表明，Lambda/Sigma0截面比在高剩余能量Q>=300 MeV时超过该值一个数量级。为了更好地理解，在13 MeV和60 MeV剩余能量之间采集了额外的数据。在最初的20 MeV剩余能量内，观察到截面比强烈下降，在较高的剩余能量范围内下降较缓。使用包括p-Y末态相互作用的参数化对数据的描述表明，与p-Lambda系统相比，p-Sigma0 FSI要小得多。
引用
@article{arxiv.nucl-ex/0401020,
title = {Energy dependence of the Lambda/Sigma0 production cross section ratio in p-p interactions},
author = {P. Kowina and H. -H. Adam and A. Budzanowski and R. Czyzykiewicz and D. Grzonka and M. Janusz and L. Jarczyk and B. Kamys and A. Khoukaz and K. Kilian and P. Moskal and W. Oelert and C. Piskor-Ignatowicz and J. Przerwa and T. Rozek and R. Santo and G. Schepers and T. Sefzick and M. Siemaszko and J. Smyrski and A. Strzalkowski and A. Taschner and P. Winter and M. Wolke and P. Wustner and W. Zipper},
journal= {arXiv preprint arXiv:nucl-ex/0401020},
year = {2009}
}
备注
6 pages, 3 figures, Presented at X. International Conference On Hadron Spectroscopy (Hadron 2003), Aschaffenburg, Germany, 31 Aug - 6 Sep 2003