What Can we Learn about $Θ$ Baryon from Unified Picture for Hadron Spectra

Abstract

An analysis of the recent results from several experimental groups reported observation of a new $Θ$ baryon has been presented from a view point of the unified picture for hadron spectra developed early \cite{12}. It is shown that, in fact, two different $Θ$ baryons have been discovered. We have also established that both $Θ$ baryons are excellently incorporated in the unified picture for hadron spectra. It is argued that the presented experimental material revealed an existence of the positive srangeness $Θ$ partners for the observed $Λ$ and $Σ$ states with negative strangeness as we predicted.