质子 - 质子碰撞中的 pK0\Sigma+ 末态
核实验
2015-06-04 v1 核理论
摘要
本文报道了对反应 pp->pK0\Sigma+ 的研究结果，束流动量分别为 p_{beam} = 2950、3059 和 3200 MeV/c（过剩能量为 \epsilon= 126、161 和 206 MeV）。确定了所有能量下的总截面；针对 \epsilon= 161 MeV 呈现了一组微分截面（Dalitz 图；所有二体子系统的不变质量谱；所有末态粒子的角分布；螺旋度系和 Jackson 系中的分布）。总截面与可用的三体相空间体积成正比，表明跃迁矩阵元在此过剩能量范围内没有显著变化。根据微分数据得出结论，该反应主要通过 N(1710)P_{11} 和/或 N(1720)P_{13} 共振态进行；N(1650)S_{11} 和 \Delta(1600)P_{33} 也可能有贡献。
引用
@article{arxiv.1202.4108,
title = {The pK0\Sigma+ final state in proton-proton collisions},
author = {TOF Collaboration and M. Abdel-Bary and S. Abdel-Samad and K-Th. Brinkmann and H. Clement and J. Dietrich and E. Doroshkevich and S. Dshemuchadse and K. Ehrhardt and A. Erhardt and W. Eyrich and A. Filippi and H. Freiesleben and M. Fritsch and W. Gast and J. Georgi and A. Gillitzer and J. Gottwald and D. Hesselbarth and H. Jäger and B. Jakob and R. Jäkel and L. Karsch and K. Kilian and H. Koch and M. Krapp and J. Kreß and E. Kuhlmann and A. Lehmann and S. Marcello and S. Marwinski and S. Mauro and W. Meyer and P. Michel and K. Möller and H. P. Morsch and H. Mörtel and L. Naumann and N. Paul and L. Pinna and C. Pizzolotto and Ch. Plettner and S. Reimann and M. Richter and J. Ritman and E. Roderburg and A. Schamlott and P. Schönmeier and W. Schroeder and M. Schulte-Wissermann and T. Sefzick and F. Stinzing and M. Steinke and G. Y. Sun and A. Teufel and W. Ullrich and G. J. Wagner and M. Wagner and R. Wenzel and A. Wilms and P. Wintz and S. Wirthand and P. Wüstner and P. Zupranski},
journal= {arXiv preprint arXiv:1202.4108},
year = {2015}
}
备注
15 pages, 10 figures