The potential of hyperon physics with PANDA at FAIR
Walter Ikegami Andersson and Karin Schönning
PA-JOU-2020-010.pdf
(1.6 MB)
The antiproton experiment PANDA at FAIR is designed to take hadron physics to a new level
in scope, precision and accuracy. In this work, its unique capability for studies of hyperons is outlined. We
discuss hyperons as diagnostic tool 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. The results, presented in detail in this paper, show that hyperon-antihyperon pairs
can be exclusively reconstructed with high efficiency and very low background contamination. In addition,
the polarisation and spin correlations have been studied, exploiting the 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 show that spin observables can be studied with
high precision and accuracy already during the first phase of data taking with PANDA.
in scope, precision and accuracy. In this work, its unique capability for studies of hyperons is outlined. We
discuss hyperons as diagnostic tool 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. The results, presented in detail in this paper, show that hyperon-antihyperon pairs
can be exclusively reconstructed with high efficiency and very low background contamination. In addition,
the polarisation and spin correlations have been studied, exploiting the 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 show that spin observables can be studied with
high precision and accuracy already during the first phase of data taking with PANDA.