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Dependence on the Identification of the Scale Energy Parameter ∼Q2 in the Quark Distribution Functions for a DIS Production of Za

机译:Z a 的DIS生成在Quark分布函数中依赖于规模能量参数&#8764Q 2 的识别

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We discuss the Z-production in a DIS (Deep Inelastic Scattering) process e + p → e + Z + X using the Parton Model, within the context of the Standard Model. In contrast with deep inelastic eP-scattering (e + p → e + X), where the choice of ?Q~(2) , as the transferred momentum squared, is unambiguous; whereas in the case of boson production , the transferred momentum squared, at quark level, depends on the reaction mechanism (where is the EW interaction taking place). We suggest a proposal based on kinematics of the process considered and the usual criterion for ?Q ~(2) , which leads to a simple and practical prescription to calculate Z-production via ep-DIS. We also introduce different options in order to perform the convolution of the parton distribution functions (PDFs) and the scattering amplitude of the quark processes. Our aim in this work is to analyze and show how large could be the dependence of the total cross section rates on different possible prescriptions used for the identification of the scale energy parameter ?Q ~(2) . We present results for the total cross section as a function of the total energy s of the system ep, in the range 300< s ≤1300 GeV .
机译:我们将在标准模型的背景下,使用Parton模型讨论在DIS(深非弹性散射)过程e + p→e + Z + X中的Z生成。与深层非弹性eP散射(e + p→e + X)相反,当传递的动量平方成正比时,?Q〜(2)的选择是明确的。而在玻色子生产的情况下,在夸克水平上传递的动量平方取决于反应机理(发生电子相互作用的地方)。我们建议基于所考虑过程的运动学和?Q〜(2)的通常标准的建议,这导致通过ep-DIS计算Z产量的简单实用处方。为了执行parton分布函数(PDF)和夸克过程的散射幅度的卷积,我们还引入了不同的选项。我们在这项工作中的目的是分析和显示总横截面速率对用于识别比例能量参数ΔQ〜(2)的不同可能处方的依赖性有多大。我们给出的总横截面的结果是系统ep的总能量s的函数,范围为300

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