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arXiv · 1706.04748

Measurement of the Differential and Total Cross Sections of the $γd \to K^0 Λ (p)$ Reaction within the Resonance Region

N. Compton·C. E. Taylor·K. Hicks·P. Cole·N. Zachariou·Y. Ilieva·P. Nadel-Turonski·E. Klempt·V. A. Nikonov·A. V. Sarantsev·the CLAS Collaboration
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Abstract

We report the first measurement of differential and total cross sections for the $γd \to K^0Λ(p)$ reaction, using data from the CLAS detector at the Thomas Jefferson National Accelerator Facility. Data collected during two separate experimental runs were studied with photon-energy coverage 0.8 - 3.6 GeV and 0.5 - 2.6 GeV, respectively. The two measurements are consistent giving confidence in the method and determination of systematic uncertainties. The cross sections are compared with predictions from the KAON-MAID theoretical model (without kaon exchange), which deviate from the data at higher W and at forward kaon angles. These data, along with previously published cross sections for $K^+ Λ$ photoproduction, provide essential constraints on the nucleon resonance spectrum. A first partial wave analysis has been performed that describes the data without the introduction of new resonances.

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N. Compton, C. E. Taylor, K. Hicks, P. Cole, N. Zachariou, Y. Ilieva, P. Nadel-Turonski, E. Klempt, V. A. Nikonov, A. V. Sarantsev, the CLAS Collaboration. 2017-06-16. Measurement of the Differential and Total Cross Sections of the $γd \to K^0 Λ (p)$ Reaction within the Resonance Region. https://doi.org/10.1103/physrevc.96.065201

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