论文标题
改进的pion电源的望子模型
An Improved Hadronic Model for Pion Electroproduction
论文作者
论文摘要
从PION电源数据数据获得了触发外形的高能量行为的当前测量值。这些值是依赖模型的，利用Vanderhaeghen，指南和Laget Regge（VGL）模型进行提取。在该模型中检查了量规不变性的最新工作表明，它可能导致提取的斜形形式要素大于真实值。在这里，我们介绍了一个新模型，该模型保留了VGL模型的成功，但以新的方式实现了仪表不变性。为了证明这种新方法的有效性，我们首先使用它来提取简单的玩具模型中的亲质形式。与先前的提取方法相比，改进的模型会导致更可靠的提取。在这个简单模型中的成功使我们重新分析了电源截面数据，在那里我们获得了与使用VGL程序获得的亲质形式的可比值。
Current measurements of the high energy behavior of the pion form factor are obtained from pion electroproduction data. These values are model dependent, utilizing the Vanderhaeghen, Guidal and Laget Regge (VGL) Model for their extraction. Recent work which examined the implementation of gauge invariance in that model suggested that it might lead to extracted pion form factors larger than the true values. Here we introduce a new model which preserves the successes of the VGL Model but implements gauge invariance in a new way. To demonstrate the validity of this new approach, we first use it to extract the pion form factor in a simple toy model. When compared with the previous extraction method, the improved model leads to a more reliable extraction. The success in this simple model leads us to reanalyse the electroproduction cross section data, where we obtain comparable values for the pion form factor to those obtained using the VGL procedure.
