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$K^+\Lambda(1520)$ photoproduction at forward angles near threshold with the BGOOD experiment

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arxiv 2406.01121 v2 pith:GJM6PSSL submitted 2024-06-03 nucl-ex

E.O. Rosanowski , T.C. Jude , S. Alef , A.J. Clara Figueiredo , D.D Burdeinyi , P.L. Cole , R. Di Salvo , D. Elsner
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A. Fantini O. Freyermuth F. Frommberger V.B Ganenko F. Ghio J. Gro{ss} K. Kohl P. Levi Sandri G. Mandaglio R. Messi D. Moricciani P. Pedroni B.-E. Reitz M. Romaniuk G. Scheluchin H. Schmieden A. Sonnenschein
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keywords thresholdanglesbgoodcentre-of-masscrossenergyexperimentforward
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abstract

The differential cross section for $\gamma p\rightarrow K^+\Lambda(1520)$ was measured from threshold to a centre-of-mass energy of 2090\,MeV at forward angles at the BGOOD experiment. The high statistical precision and resolution in centre-of-mass energy and angle allows a detailed characterisation of this low-momentum transfer kinematic region. The data agree with a previous LEPS measurement and support effective Lagrangian models that indicate that the contact term dominates the cross section near threshold.

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