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Left-Right Asymmetry in $\bar{p}p \rightarrow π^- π^+$

George Bathas·W. M. Kloet
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Abstract

Results for d$σ$/d$Ω$ and $A_N$ in the reaction $\bar{p}p \rightarrow π^- π^+$ are predicted by a simple quark model. They are compared to recent experimental data from LEAR, as well as to previous predictions from nucleon-exchange models. At low energy the quark model does better than the nucleon-exchange models, but the overall comparison to experiment remains poor. In particular, the double-dip structure of the experimental $A_N$ data is only partly represented. This shortcoming of the simple quark model is traced back to a too small J=2 amplitude. This has interesting implications for the range of this specific annihilation process.

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George Bathas, W. M. Kloet. 1993-03-16. Left-Right Asymmetry in $\bar{p}p \rightarrow π^- π^+$. https://doi.org/10.1103/physrevc.47.2207

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