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

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 < Egamma < 5.5 GeV.
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http://hal.in2p3.fr/in2p3-00665017
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Submitted on : Wednesday, February 1, 2012 - 9:18:15 AM
Last modification on : Wednesday, September 16, 2020 - 4:08:29 PM

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H. Egiyan, A. Fradi, M. Guidal, H.S. Jo, E. Voutier, et al.. Upper limits for the photoproduction cross section for the Phi--(1860) pentaquark state off the deuteron. Physical Review C, American Physical Society, 2012, 85, pp.015205. ⟨10.1103/PhysRevC.85.015205⟩. ⟨in2p3-00665017⟩

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