基于 $\vec{p}p \rightarrow pK^{+}\Lambda$ 反应末态相互作用对自旋三重态 $p\Lambda$ 散射长度的首次模型无关测量
核实验
2017-03-29 v3
摘要
利用 COSY-TOF 探测器在束流动量为 下测量了 反应。极化质子束使得通过所产生的介子的不对称性 () 测量束流分析本领成为可能。该观测量允许首次以模型无关的方式从反应的末态相互作用中提取 自旋三重态散射长度。所得值为 。该值与理论预测及模型相关分析的结果相符。
引用
@article{arxiv.1607.04783,
title = {First Model-Independent Measurement of the Spin Triplet $p\Lambda$ Scattering Length from Final State Interaction in the $\vec{p}p \rightarrow pK^{+}\Lambda$ Reaction},
author = {TOF Collaboration and F. Hauenstein and E. Borodina and H. Clement and E. Doroshkevich and R. Dzhygadlo and K. Ehrhardt and W. Eyrich and W. Gast and A. Gillitzer and D. Grzonka and J. Haidenbauer and C. Hanhart and S. Jowzaee and K. Kilian and P. Klaja and L. Kober and M. Krapp and M. Mertens and P. Moskal and J. Ritman and E. Roderburg and M. Röder and W. Schroeder and T. Sefzick and P. Wintz and P. Wüstner},
journal= {arXiv preprint arXiv:1607.04783},
year = {2017}
}
备注
Revised version as accepted for publication in PRC