Interpretation of Experimental J^PC Exotic Signals

Details Interpretation of Experimental J^PC Exotic Signals Interpretation of Experimental J^PC Exotic Signals

1998-08-05

arxiv.org/abs/hep-ph/9808225v1

Phys.Rev.D58:114012,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, LaTeX, 4 encapsulated postscript figures. Accepted for publication by Physical Review D

Scientific paper

10.1103/PhysRevD.58.114012

We investigate theoretical interpretations of the 1.4 GeV J^PC 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 \pm 14 MeV.

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