Exclusive Photoproduction of the Cascade (Xi) Hyperons

Abstract

We report on the first measurement of exclusive Xi-(1321) hyperon photoproduction in gamma p --> K+ K+ Xi- for 3.2 < E(gamma) < 3.9 GeV. The final state is identified by the missing mass in p(gamma,K+ K+)X measured with the CLAS detector at Jefferson Laboratory. We have detected a significant number of the ground-state Xi-(1321)1/2+, and have estimated the total cross section for its production. We have also observed the first excited state Xi-(1530)3/2+. Photoproduction provides a copious source of Xi's. We discuss the possibilities of a search for the recently proposed Xi5-- and Xi5+ pentaquarks.

arXiv commentsubmitted to Phys. Rev. C

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Cited by in corpus (22)

• Dynamically generated resonances from the vector octet-baryon octet interaction
• Xi and Omega baryons in the Skyrme model
• Interaction of vector mesons with baryons and nuclei
• Effects of pseudoscalar-baryon channels in the dynamically generated vector-baryon resonances
• Strangeness -2 and -3 Baryons in a Constituent Quark Model
• Dynamically generated resonances from the vector octet-baryon decuplet interaction
• $\Xi$ baryon strong decays in a chiral quark model
• Photoproduction of Xi off nucleons
• Cascade production in the reactions gamma p --> K+ K+ (X) and gamma p --> K^+ K^+ pi- (X)
• Magnetic moments of the low-lying {1/2}^- octet baryon resonances
• Phenomenological model for the Kbar N --> K Xi reaction
• Spectroscopic Investigation of Light Strange S=-1 $\Lambda$, $\Sigma$ and S=-2 $\Xi$ Baryons
• Role of high-spin hyperon resonances in the reaction of $\gamma p\to K^{+}{K}^{+}{\Xi }^{-}$
• Quantum number assignments of light strange baryons in Regge phenomenology
• 70 Years of Hyperon Spectroscopy: A review of strange $\Xi$, $\Omega$ baryons, and the spectrum of charmed and bottom baryons
• Model-independent determination of the parity of $\Xi$ hyperons
• Study of Xi Photoproduction from Threshold to W = 3.3 GeV
• First Measurement of ${\Xi }^{-}$ Polarization in Photoproduction
• Medium effects in antikaon-induced ${\Xi }^{-}$ hyperon production on nuclei near threshold
• Momentum dependence of near-threshold photoproduction of ${\Xi }^{-}$ hyperons off nuclei and their properties in the nuclear medium
• Monte Carlo Simulation-Based Partial Wave Analysis of ${\Xi }_c^{+}\to {\Xi }^{-}{\pi }^{+}{\pi }^{+}$ Decay
• Production and parity determination of $\Xi$ baryons