First Observation of an Exotic Reggeon

G. D. Alexeev, M. G. Alexeev, C. Alice +180

We present new \compass high-statistics measurements of the peripheral production of $\hat{I}\cdot \ddot{I}{€}^{-}$ and $\hat{I}{\cdot }^{\prime }\ddot{I}{€}^{-}$ pairs in the reactions $\ddot{I}{€}^{-}p\to \hat{I}{\cdot }^{(\prime )}\ddot{I}{€}^{-}p$. For the…