%0 Journal Article
%T Left-Right Asymmetry in $\bar{p}p \rightarrow ¦Ð^- ¦Ð^+$
%A George Bathas
%A W. M. Kloet
%J Physics
%D 1993
%I arXiv
%R 10.1103/PhysRevC.47.2207
%X Results for d$\sigma$/d$\Omega$ and $A_N$ in the reaction $\bar{p}p \rightarrow \pi^- \pi^+$ 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.
%U http://arxiv.org/abs/nucl-th/9303012v1