论文标题
$λ$和$ξ^ - $ $在公平的熊猫研究的潜力
The potential of $Λ$ and $Ξ^-$ studies with PANDA at FAIR
论文作者
论文摘要
Fair的抗蛋白熊猫旨在使强子物理学在范围，精度和准确性方面提高水平。在这项工作中，概述了其独特的Hyperons研究能力。我们讨论地面态超子作为研究强相互作用的非扰动方面和基本对称性的诊断工具。对两个基准Hyperon-Antihyperon生产渠道进行了新的仿真研究：$ \ bar {p} p \ to \barλλ$和$ \ bar {p} p \ to \barξ^+ξ^ - $。在本文中详细介绍的结果表明，这些反应中的超抗抗原对可以以高效率和非常低的背景污染而专门重建。另外，已经研究了极化和自旋相关性，从而利用了超子和抗植物的弱，自我分析的衰减。已经应用和评估了两种独立的有限效率方法：一种标准的多维效率校正方法，一种独立的效率方法。对所有通道，梁矩和可观察物的所有通道，透彻评估后者的适用性。在所有情况下，标准方法都会产生良好的结果，并表明可以在使用熊猫的数据的第一阶段以高精度和准确性来研究旋转可观察物。
The antiproton experiment PANDA at FAIR is designed to bring hadron physics to a new level in terms of scope, precision and accuracy. In this work, its unique capability for studies of hyperons is outlined. We discuss ground-state hyperons as diagnostic tools to study non-perturbative aspects of the strong interaction, and fundamental symmetries. New simulation studies have been carried out for two benchmark hyperon-antihyperon production channels: $\bar{p}p \to \barΛΛ$ and $\bar{p}p \to \barΞ^+Ξ^-$. The results, presented in detail in this paper, show that hyperon-antihyperon pairs from these reactions can be exclusively reconstructed with high efficiency and very low background contamination. In addition, the polarisation and spin correlations have been studied, exploiting the weak, self-analysing decay of hyperons and antihyperons. Two independent approaches to the finite efficiency have been applied and evaluated: one standard multidimensional efficiency correction approach, and one efficiency independent approach. The applicability of the latter was thoroughly evaluated for all channels, beam momenta and observables. The standard method yields good results in all cases, and shows that spin observables can be studied with high precision and accuracy already in the first phase of data taking with PANDA.
