Photo-production of neutral kaons on 12C in the threshold region

Abstract

Kaon photo-production process on ${}^{12}$C has been studied by measuring neutral kaons in a photon energy range of 0.8$-$1.1 GeV. Neutral kaons were identified by the invariant mass constructed from two charged pions emitted in the $K_S^0\to {\pi }^{+}{\pi }^{-}$ decay channel. The differential cross sections as well as the integrated ones in the threshold photon energy region were obtained. The obtained momentum spectra were compared with a Spectator model calculation using elementary amplitudes of kaon photo-production given by recent isobar models. Present result provides, for the first time, the information on $n(\gamma ,K^0)\Lambda$ reaction which is expected to play an important role to construct models for strangeness production by the electromagnetic interaction. Experimental results show that cross section of ${}^{12}\mathrm{C}(\gamma ,K^0)$ is of the same order to that of ${}^{12}\mathrm{C}(\gamma ,K^{+})$ and suggest that slightly backward $K^0$ angular distribution is favored in the $\gamma n\to K^0\Lambda$ process.

6 pages, 8 figures

References in corpus (13)

• Differential Cross Sections for gamma + p --> K+ + Y for Lambda and Sigma0 Hyperons
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Cited by in corpus (4)

• Contribution of higher nucleon resonances to K*Λ photoproduction
• K*Sigma photoproduction off the proton target with baryon resonances
• Neutral Kaon Spectrometer 2
• Strangeness Electromagnetic Production on Nucleons and Nuclei