Interpretation of Experimental JPC Exotic Signals
Alexander Donnachie, Philip R. Page
Abstract
We investigate theoretical interpretations of the 1.4 GeV JPC exotic resonance reported by the E852 collaboration. It is argued that interpretation in terms of a hybrid meson is untenable. A K-matrix analysis shows that the 1.4 GeV enhancement in the E852 eta pi data can be understood as an interference of a non-resonant Deck-type background and a resonance at 1.6 GeV. A final state rescattering calculation shows that the 1.6 GeV hybrid has a eta pi width which is bounded above by 57 14 MeV.
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