关于对偶参数化极小模型实现中的错误和导致的不能描述高能DVCS数据
On the mistake in the implementation of the minimal model of the dual parameterization and resulting inability to describe the high-energy DVCS data
摘要：
本文纠正了\cite{Guzey:2005ec,Guzey:2006xi}中关于核子广义部分子分布（GPD）的对偶参数化的极小模型对深虚康普顿散射（DVCS）的高能数据给出了一个很好的、本质上与模型无关的描述的错误主张。在\cite{Guzey:2005ec,Guzey:2006xi}中实现对偶参数化时，DVCS振幅前面的数值前置因子2缺失。我们发现，校正后的极小模型的双重参数化显着高估的HERA数据（H1和ZEUS）的DVCS截面。
英文摘要：
We correct the mistaken claim made in \cite{Guzey:2005ec,Guzey:2006xi} that the minimal model of the dual parameterization of nucleon generalized parton distributions (GPDs) gives a good, essentially model-independent description of high-energy data on deeply virtual Compton scattering (DVCS). In the implementation of the dual parameterization in \cite{Guzey:2005ec,Guzey:2006xi}, the numerical prefactor of two in front of the DVCS amplitude was missing. We show that the corrected minimal model of the dual parameterization significantly overestimates the HERA data (H1 and ZEUS) on the DVCS cross section.
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