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Upper limits for the photoproduction cross section for the phi(--)(1860) pentaquark state off the deuteron

Egiyan, H.
; 
Holtrop, M.
; 
Zana, L.
; 
Griffioen, K. A.
; 
Zhao, B.
Abstract
We searched for the phi(--)(1860) pentaquark in the photoproduction process off the deuteron in the Xi(-)pi(-)-decay channel using CLAS. The invariant-mass spectrum of the Xi(-)pi(-) system does not indicate any statistically significant enhancement near the reported mass M = 1.860 GeV. The statistical analysis of the sideband-subtracted mass spectrum yields a 90%-confidence-level upper limit of 0.7 nb for the photoproduction cross section of phi(--)(1860) with a consecutive decay into Xi(-)pi(-) in the photon-energy range 4.5 GeV < E-gamma < 5.5 GeV.
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2012-01-01
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Physics
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https://doi.org/10.1103/PhysRevC.85.015205
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https://scholarworks.wm.edu/handle/internal/747
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