Precision measurements of strangeness photoproduction at threshold energies with the Crystal Ball at MAMI-C

Crystal Ball MAMI-C A2 Collaborat, T. C. Jude, D. J. Glazier, D. P. Watts

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The photoproduction of K+ mesons from the nucleon provides important constraints on the nucleon excitation spectrum and at threshold energies challenges effective field theories based on chiral perturbation in the strange quark sector. Preliminary cross-section measurements for gamma(p,K+)Lambda are presented at an unprecedented beam energy resolution. The data was collected at the MAMI-C facility in Mainz using the Crystal Ball Detector. A new method of K+ detection was used in which the K+ is tagged from its weak decay products in the detector crystals This technique has application with other calorimeters at present and future hadron facilities.

Original languageEnglish
Pages (from-to)1358-1361
Number of pages4
JournalChinese Physics C
Issue number12
Publication statusPublished - Dec 2009

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