Exploring the potential of antihyperons in nuclei with antiprotons

Abstract

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 $\to \Lambda \bar{\Lambda }$. 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 $\Xi \bar{\Xi }$ pairs produced at 2.9GeV/c the asymmetry is sufficiently sensitive to predicted differences between the $\Xi$ and $\bar{\Xi }$ potentials.

arXiv commentupdated references; several minor additions; format of figures modified for better representation

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Cited by in corpus (5)

• PANDA Phase One
• Possibility of cold nuclear compression in antiproton-nucleus collisions
• Antihyperon potentials in nuclei via exclusive antiproton-nucleus reactions at FAIR
• Many Facets of Strangeness Nuclear Physics with Stored Antiprotons
• Cold compression of nuclei induced by antiprotons