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

摘要：

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 γ(p, K~+)A are presented at an unprece-dented 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.

关键词： Crystal Ball Detector strange meson photoproduction

作者: T.C.Jude D.I Glazier D.P.Watts

作者单位: The University of Edinburgh,Edinburgh,EH9 3JZ,UK The University of Edinburgh,Edinburgh,EH9 3JZ,UK;Instute fur Kernphysik,Johannes Gutenberg-Universit

会议类型: 国际会议

会议名称: The 12th International Workshop on the Physics of Ezcited Nucleon NSTAR2009(2009激发态核子物理研讨会)

会议地点: 北京

会议语种:英文

页码: 1358-1361

在线出版日期: 2009-04-19（万方平台首次上网日期，不代表论文的发表时间）