Exploring the potential of antihyperons in nuclei with antiprotons
Abstract
Description
A simple method to explore the interaction of antihyperons in nuclei by exclusive hyperon-antihyperon pair production close to threshold in antiproton nucleus interactions is proposed. Due to energy and momentum conservation event-by-event transverse momentum correlations of the produced hyperons and antihyperons contain information on the difference between their potentials. A schematic Monte Carlo simulation is used to illustrate the sensitivities of the proposed method for the reaction 1.66GeV/c antiproton+$^{12}$C $\to {Λ\barΛ}$. For produced D-meson pairs at 6.7GeV/c the sensitivity of the transverse momenta correlation will probably be to small to deduce differences between the potentials for D$^+$ and D$^-$ mesons. However, for $Ξ\barΞ$ pairs produced at 2.9GeV/c the asymmetry is sufficiently sensitive to predicted differences between the $Ξ$ and $\barΞ$ potentials.
updated references; several minor additions; format of figures modified for better representation
updated references; several minor additions; format of figures modified for better representation