Measurement of the $\gamma n\rightarrow K^0\Sigma^0$ differential cross section over the $K^*$ threshold
/ Authors
K. Kohl, T. Jude, S. Alef, R. Beck, A. Braghieri, P. Cole, R. Salvo, A. Fantini, O. Freyermuth, F. Frommberger
and 23 more authors
F. Ghio, A. Gridnev, D. Hammann, J. Hannappel, N. Kozlenko, A. Lapik, P. Sandri, V. Lisin, G. Mandaglio, R. Messi, D. Moricciani, V. Nedorezov, V. Nikonov, D. Novinsky, P. Pedroni, A. Polonski, B. Reitz, M. Romaniuk, G. Scheluchin, H. Schmieden, A. Stuglev, V. Sumachev, V. Tarakanov
/ Abstract
The differential cross section for the quasi-free photoproduction reaction $\gamma n\rightarrow K^0\Sigma^0$ 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.