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Measurement of the n K 00 differential cross section over the K? threshold

K. Kohl,T. C. Jude,S. Alef,R. Beck,A. Braghieri,P. L. Cole,D. Elsner,R. Di Salvo,A. Fantini,O. Freyermuth,F. Frommberger,F. Ghio,A. Gridnev,D. Hammann,J. Hannappel,N. Kozlenko,A. Lapik,P. Levi Sandri,V. Lisin,G. Mandaglio,R. Messi,D. Moricciani,V. Nedorezov,V. A. Nikonov,D. Novinskiy,P. Pedroni,A. Polonskiy,B. -E Reitz,M. Romaniuk,G. Scheluchin,H. Schmieden,A. Stuglev,V. Sumachev,V. Tarakanov

EUROPEAN PHYSICAL JOURNAL A（2023）

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Abstract
The differential cross section for the quasi-free photoproduction reaction gamma(n)-> K-0 Sigma(0) was measured at BGOOD at ELSA from threshold to a centre-of-mass energy of 2400 MeV. Close to threshold the results are consistent with existing data and are in agreement with partial wave analysis solutions over the full measured energy range, with a large coupling to the Delta(1900)1/2(-) evident. This is the first dataset covering the K* threshold region, where there are model predictions of dynamically generated vector meson-baryon resonance contributions.
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