考虑K+K-末态相互作用的近阈值pp→ppK+K-反应的广义Dalitz图分析
高能物理 - 唯象学
2009-11-06 v1
摘要
反应的激发函数在阈值附近显示出显著增强，这很可能归因于和末态相互作用的影响。在对COSY-11数据（包括质子-K-相互作用）在超出能量Q=10 MeV和28 MeV下的改进再分析中，该增强得到了确认。二粒子和三粒子子系统的不变质量分布允许在低超出能量下检验源自COSY-ANKE数据的ppK+K-系统中相互作用的假设和参数。最后，基于首次获得的低能K+K-不变质量分布和广义Dalitz图分析，我们估计K+K-相互作用的散射长度为|Re(a_K^+K^-)| = 0.5 +4.0 -0.5 fm和Im(a_K^+K^-) = 3.0 ± 3.0 fm。
引用
@article{arxiv.0909.3974,
title = {Generalized Dalitz Plot analysis of the near threshold pp-->ppK+K- reaction in view of the K+K- final state interaction},
author = {M. Silarski and P. Moskal and E. Czerwinski and R. Czyzykiewicz and D. Gil and D. Grzonka and L. Jarczyk and B. Kamys and A. Khoukaz and J. Klaja and P. Klaja and W. Krzemien and W. Oelert and J. Ritman and T. Sefzick and M. Siemaszko and J. Smyrski and A. Taschner and P. Winter and M. Wolke and P. Wustner and M. Zielinski and W. Zipper and J. Zdebik},
journal= {arXiv preprint arXiv:0909.3974},
year = {2009}
}
备注
8 pages, 7 figures, to be published in Phys. Rev. C