Diffraction Dissociation in 205 GeV/c π−p Interactions

Pion and proton diffraction dissociation are observed in π−p interactions at 205 GeV/c. The 2‐ and 4‐prong final states show evidence for N* and A1 production. Pion diffraction into masses up to ∼ 6 GeV is observed in the inclusive reaction π−p ⇒ p + X.