Intersecting Real Regge Trajectories inπ−p→π0nand theρ′Puzzle

A new and very simple interpretation of the reaction ${\pi }^{-}p\to {\pi }^{0}n$ based on intersecting, real, $\rho$ and ${\rho }^{\prime }$ Regge trajectories is proposed. The most dominant physical features of the differential cross section and polarization data directly determine the main characteristics of the ${\rho }^{\prime }$, which turn out to be completely different from those based on a belief in parallel trajectories. The ${\rho }^{\prime }$ trajectory thus determined is compatible with the recently discovered spin-one resonance of mass 1968 MeV.