Difference in Energy Dependence forA2−andA20Production

Abstract

We present a comparison of ${A_2}^{-}$ and ${A_2}^0$ production. The cross section for the production of ${A_2}^0$ falls much more rapidly with increasing energy than the ${A_2}^{-}$ cross section. The characteristics of the production processes seem to be very similar in other respects. These facts are hard to understand in terms of a Regge picture of the production process.