1.76 AGeV 能量下 Ar+KCl 碰撞中的 Lambda-p 费米尺度学
核实验
2016-08-14 v1
摘要
我们报告了迄今为止最低能量下的 p 费米尺度学结果。在束流能量为 1.76A~GeV 时，利用 SIS18/GSI 的高接受度双电子谱仪 (HADES) 研究了 Ar+KCl 反应。收集了高统计量和高纯度的 样本，使得能够研究小相对动量下的 p 关联。将实验关联函数与相应的模型计算进行比较，从而可以确定 p 发射源的时空尺度。发现 p 源半径略小于类似碰撞系统中 pp 关联半径。当前的 p 半径显著小于 AGS、SPS 和 RHIC 能区 Au+Au/Pb+Pb 碰撞中发现的半径，但大于从 He 上电产生观测到的半径。考虑到所有可用数据，我们发现 p 源半径随参与者数的三分之一次方几乎线性增加。
关键词
引用
@article{arxiv.1004.2328,
title = {Lambda-p femtoscopy in collisions of Ar+KCl at 1.76 AGeV},
author = {G. Agakishiev and A. Balanda and R. Bassini and D. Belver and A. V. Belyaev and A. Blanco and M. Böhmer and J. L. Boyard and P. Braun-Munzinger and P. Cabanelas and E. Castro and S. Chernenko and T. Christ and M. Destefanis and J. Díaz and F. Dohrmann and A. Dybczak and T. Eberl and L. Fabbietti and O. V. Fateev and P. Finocchiaro and P. Fonte and J. Friese and I. Fröhlich and T. Galatyuk and J. A. Garzón and R. Gernhäuser and A. Gil and C. Gilardi and M. Golubeva and D. González-Díaz and F. Guber and T. Hennino and R. Holzmann and I. Iori and A. Ivashkin and M. Jurkovic and B. Kämpfer and K. Kanaki and T. Karavicheva and D. Kirschner and I. Koenig and W. Koenig and B. W. Kolb and R. Kotte and F. Krizek and R. Krücken and W. Kühn and A. Kugler and A. Kurepin and S. Lang and J. S. Lange and K. Lapidus and T. Liu and L. Lopes and M. Lorenz and L. Maier and A. Mangiarotti and J. Markert and V. Metag and B. Michalska and J. Michel and D. Mishra and E. Morinière and J. Mousa and C. Müntz and L. Naumann and J. Otwinowski and Y. C. Pachmayer and M. Palka and Y. Parpottas and V. Pechenov and O. Pechenova and J. Pietraszko and W. Przygoda and B. Ramstein and A. Reshetin and M. Roy-Stephan and A. Rustamov and A. Sadovsky and B. Sailer and P. Salabura and A. Schmah and Yu. G. Sobolev and S. Spataro and B. Spruck and H. Ströbele and J. Stroth and C. Sturm and M. Sudol and A. Tarantola and K. Teilab and P. Tlusty and M. Traxler and R. Trebacz and H. Tsertos and V. Wagner and M. Weber and C. Wendisch and M. Wisniowski and T. Wojcik and J. Wüstenfeld and S. Yurevich and Y. V. Zanevsky and P. Zhou and P. Zumbruch},
journal= {arXiv preprint arXiv:1004.2328},
year = {2016}
}
备注
5 pages, 3 figures, submitted to Phys. Rev. C