π−BExchange-Degenerate Model forV0Δ++Production

Abstract

The forward differential cross section of $\rho \Delta$ production is shown to be reproduced quantitatively by an evasive Reggeized one-pion-exchange model which smoothly reduces to the Born term at the pion pole. Assuming exact $\pi -B$ exchange degeneracy leads to predictions for $\omega \Delta$ production which are in agreement with the experimental $s$ and $t$ dependences. Similar agreement is found for $K^{*}\Delta$ production.