φ介子核透明度的动量依赖性
核实验
2015-06-03 v1
摘要
利用ANKE探测器系统在COSY上，通过衰变，在入射束流能量2.83 GeV下研究了质子与C、Cu、Ag和Au靶的φ介子产生。首次确定了这些靶在动量范围0.6–1.6 GeV/c内的核透明度比、介质中φ宽度以及前向角度φ介子产生的微分截面。提取的φ宽度值显示出显著的动量依赖性迹象，对应于有效的φ-N吸收截面范围为14–21 mb。
引用
@article{arxiv.1201.3517,
title = {Momentum dependence of the phi-meson nuclear transparency},
author = {M. Hartmann and Yu. T. Kiselev and A. Polyanskiy and E. Ya. Paryev and M. Buescher and D. Chiladze and S. Dymov and A. Dzyuba and R. Gebel and V. Hejny and B. Kaempfer and I. Keshelashvili and V. Koptev and B. Lorentz and Y. Maeda and V. K. Magas and S. Merzliakov and S. Mikirtytchiants and M. Nekipelov and H. Ohm and L. Roca and H. Schade and V. Serdyuk and A. Sibirtsev and V. Y. Sinitsyna and H. J. Stein and H. Stroeher and S. Trusov and Yu. Valdau and C. Wilkin and P. Wuestner and Q. J. Ye},
journal= {arXiv preprint arXiv:1201.3517},
year = {2015}
}
备注
9 pages, 5 figures