Unpolarized and polarized elementary kaon electroproduction cross sections measured at MAMI
Unpolarized and polarized elementary kaon electroproduction cross sections measured at MAMI
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在 MAMI 测量的非极化和极化基本 kaon 电生产横截面
DOI：
10.1051/epjconf/20123706004
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发表时间：
2012
影响因子：
--
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
P. Achenbach;et al.
目前和未来的研究电生产的K介子在美因茨Microtron MAMI发挥着重要作用。在多能谱仪装置上，利用Kaos能谱仪测量了p（e，e′K+）Λ，∑ 0反应的低动量转移截面.并对Isobar模型和Regge+共振模型进行了比较。这些测量已经清楚地区分了有效的拉格朗日模型的光和电的奇异性。在低四动量转移的偏振束的新实验正在解决这个过程中的横向-横向响应的虚部，可以通过翻转束电子螺旋度来分离。这些研究对于理解等压线模型中的基本耦合常数和强子的电磁形状因子及其共振过程具有重要意义。
Present and future research into the electroproduction of kaons plays an important role at Mainz Microtron MAMI. With the Kaos spectrometer employed for kaon detection in the multi-spectrometer facility, cross section measurements of the exclusivep(e,e′K+)Λ,∑0reactions at low momentum transfers have been performed. Isobar and Regge-plus-resonance models were compared with the data. These measurements have clearly discriminated between effective Lagrangian models for photo- and electroproduction of strangeness. New experiments with polarized beam at low four-momentum transfer are addressing the imaginary part of the longitudinal-transverse response in this process, that can be separated by flipping the beam electron helicity. These studies are important for the understanding of basic coupling constants in the isobar models and the electromagnetic form factors of the hadrons and their resonances involved in the process.