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Experimental study of the γ prightarrow K⁰Sigma^+, γ nrightarrow K⁰Λ, and γ nrightarrow K⁰ Sigma⁰ reactions at the Mainz Microtron

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arxiv 1811.05547 v1 pith:ECPOJZ7V submitted 2018-11-13 nucl-ex

Experimental study of the γ prightarrow K⁰Sigma^+, γ nrightarrow K⁰Λ, and γ nrightarrow K⁰ Sigma⁰ reactions at the Mainz Microtron

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keywords gammarightarrowsigmareactionsresultscrossexperimentallambda
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This work measured $d\sigma/d\Omega$ for neutral kaon photoproduction reactions from threshold up to a c.m.\ energy of 1855MeV, focussing specifically on the $\gamma p\rightarrow K^0\Sigma^+$, $\gamma n\rightarrow K^0\Lambda$, and $\gamma n\rightarrow K^0 \Sigma^0$ reactions. Our results for $\gamma n\rightarrow K^0 \Sigma^0$ are the first-ever measurements for that reaction. These data will provide insight into the properties of $N^*$ resonances and, in particular, will lead to an improved knowledge about those states that couple only weakly to the $\pi N$ channel. Integrated cross sections were extracted by fitting the differential cross sections for each reaction as a series of Legendre polynomials and our results are compared with prior experimental results and theoretical predictions.

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