论文标题
{\ fontfamily {qcr} \ selectfont genie}蒙特卡洛事件发生器中的准电磁散射横截面和世界数据比较
Quasielastic Electromagnetic Scattering Cross Sections and World Data Comparisons in the {\fontfamily{qcr}\selectfont GENIE} Monte Carlo Event Generator
论文作者
论文摘要
在高能$ν$散射社区中，使用Monte Carlo Neutrino事件生成器（MC $ν$ EGS）是一种规范。准（QE）能源制度与$ν$振荡实验的相关性意味着，在此制度中，准确计算$νa$跨部门将是减少影响振荡参数提取的系统不确定性的关键因素。尽管如此，许多MC $ν$ EGS利用了QE散射横截面的高度现象学的参数化模型。此外，从历史上缺乏对多产电子（$ e $）散射数据的MC $ν$ s验证的文化。在这项工作中，我们实施了新的$ e a $ a $跨部门，该部分是根据fnal社区使用的主要MC $ν$ EG的Genie的核Ab Ab Ab Abs of方法获得的。特别是，我们利用了量子MC方法的结果，这些方法在短时近似（STA）中解决了多体核问题，从而使两种核子动力学保持一致地保留，这对于解释可用的核电磁（电气电磁（ElectroWeak）数据）在广泛的能量和动量转换范围内至关重要。 Genie中的这种新实现已针对世界QE电磁数据进行了充分的测试，并在$ \ sim2 \，$ \ sim2 \，$ GEV的可用数据借助缩放函数形式形式上找到了一致。该STA目前仅限于研究$ a \ leq12 $ nuclei，但是，其半包含多体标识组件可导出到其他多体计算技术（例如辅助场扩散MC），该技术可以达到$ a \ leq40 $的系统，同时又可以在Sta的多功能动力学中含有不断的分解。这些事态发展共同有望使未来的实验（例如Dune）在评估MC $ν$ Systemics，$ν$属性时更加准确，并有可能增强超出标准模型以外的物理学的能力。
The usage of Monte Carlo neutrino event generators (MC$ν$EGs) is a norm within the high-energy $ν$ scattering community. The relevance of quasielastic (QE) energy regimes to $ν$ oscillation experiments implies that accurate calculations of $νA$ cross sections in this regime will be a key contributor to reducing the systematic uncertainties affecting the extraction of oscillation parameters. In spite of this, many MC$ν$EGs utilize highly phenomenological, parameterized models of QE scattering cross sections. Moreover, a culture of validation of MC$ν$EGs against prolific electron ($e$) scattering data has been historically lacking. In this work, we implement new $e A$ cross sections obtained from nuclear ab initio approaches in GENIE, the primary MC$ν$EG utilized by the FNAL community. In particular, we utilize results from Quantum MC methods which solve the many-body nuclear problem in the Short-Time Approximation (STA), allowing consistent retention of two-nucleon dynamics which are crucial to explain available nuclear electromagnetic (electroweak) data over a wide range of energy and momentum transfers. This new implementation in GENIE is fully tested against the world QE electromagnetic data, finding agreement with available data below $\sim2\,$GeV of beam energy with the aid of a scaling function formalism. The STA is currently limited to study $A\leq12$ nuclei, however, its semi-inclusive multibody identity components are exportable to other many-body computational techniques such as Auxiliary Field Diffusion MC which can reach $A\leq40$ systems while continuing to realize the factorization contained within the STA's multinucleon dynamics. Together, these developments promise to make future experiments such as DUNE more accurate in their assessment of MC$ν$EG systematics, $ν$ properties, and potentially empower the discovery of physics beyond the Standard Model.
