Cascade production in the reactions gamma p --> K+ K+ (X) and gamma p --> K^+ K^+ pi- (X)

Abstract

Photoproduction of the cascade resonances has been investigated in the reactions $\gamma p\to K^{+}{K}^{+}(X)$ and $\gamma p\to K^{+}{K}^{+}{\pi }^{-}(X)$. The mass split of the $\Xi$ doublet is measured to be $5.4\pm 1.8$ MeV/c${}^2$, consistent with existing measurements. The differential (total) cross sections for the ${\Xi }^{-}$ have been determined for photon beam energies from 2.75 to 3.85 (4.75) GeV, and are consistent with a possible production mechanism of $Y^{\ast }\to K^{+}{\Xi }^{-}$ through a $t$-channel process. The reaction $\gamma p\to K^{+}{K}^{+}{\pi }^{-}[{\Xi }^0]$ has also been investigated in search of excited cascade resonances. No significant signal of excited cascade states other than the ${\Xi }^{-}(1530)$ is observed. The cross section results of the ${\Xi }^{-}(1530)$ have also been obtained for photon beam energies from 3.35 to 4.75 GeV.

10 pages, 10 figures

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Cited by in corpus (25)

• Baryon spectroscopy
• Strangeness -2 and -3 Baryons in a Constituent Quark Model
• $\Xi$ baryon strong decays in a chiral quark model
• Phenomenological model for the Kbar N --> K Xi reaction
• $\bar{K}+N\to K+\Xi$ reaction and $S=-1$ hyperon resonances
• Production of a cascade hyperon in the K^- - proton interaction
• Why $\Xi (1690)$ and $\Xi (2120)$ are so narrow?
• Towards the Minimal Spectrum of Excited Baryons
• Role of high-spin hyperon resonances in the reaction of $\gamma p\to K^{+}{K}^{+}{\Xi }^{-}$
• Scattering lengths of strangeness S=-2 baryon-baryon interactions
• Exact calculations of a quasi-bound state in the $\bar{K}\bar{K}N$ system
• 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
• Model-independent aspects of the reaction $\bar{K}+N\to K+\Xi$
• Theory of two-pion photo- and electroproduction off the nucleon
• Production of the H dibaryon via the (K^-,K^+) reaction on a ${}^{12}$C target
• First Measurement of ${\Xi }^{-}$ Polarization in Photoproduction
• Hyperon Photo and Electro Production at CLAS
• Meson Production and Baryon Resonances at CLAS
• The N* Physics Program at Jefferson Lab
• Hyperons analogous to the Λ(1405)
• Probing the nucleon structure with CLAS
• Production and parity determination of $\Xi$ baryons
• Strangeness Physics with CLAS at JLab