"Upper Limits for the Photoproduction Cross Section for the Φ−−(1860) P" by H. Egiyan, Gerard P. Gilfoyle et al.
 

DOI

10.1103/PhysRevC.85.015205

Abstract

We searched for the Φ--(1860) pentaquark in the photoproduction process off the deuteron in the Ξ-π--decay channel using CLAS. The invariant-mass spectrum of the Ξ-π- 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 Φ--(1860) with a consecutive decay into Ξ-π- in the photon-energy range 4.5 GeV < Eγ < 5.5 GeV.

Document Type

Article

Publication Date

1-30-2012

Publisher Statement

Copyright © 2012 American Physical Society. This article first appeared in Physical Review C 85, no. 1 (January 2012): 015205:1-9. doi:10.1103/PhysRevC.85.015205.

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