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arXiv · 1709.04370

Distillation of scalar exchange by coherent hypernucleus production in antiproton-nucleus collisions

A. B. Larionov·H. Lenske
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Abstract

The total and angular differential cross sections of the coherent process $\bar p + {}^AZ \to {}^A_\Lambda(Z-1) + \bar{\Lambda}$ are evaluated at the beam momenta $1.5\div20$ GeV/c within the meson exchange model with bound proton and $\Lambda$-hyperon wave functions. It is shown that the shape of the beam momentum dependence of the hypernucleus production cross sections with various discrete $\Lambda$ states is strongly sensitive to the presence of the scalar $\kappa$-meson exchange in the $\bar p p \to \bar\Lambda \Lambda$ amplitude. This can be used as a clean test of the exchange by scalar $\pi K$ correlation in coherent $\bar p A$ reactions.

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A. B. Larionov, H. Lenske. 2017-09-12. Distillation of scalar exchange by coherent hypernucleus production in antiproton-nucleus collisions. https://doi.org/10.1016/j.physletb.2017.09.007

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