arXiv 1801.079752018-01nucl-thhep-exhep-ph

轻子核散射中的末态相互作用和移去能

Removal Energies and Final State Interaction in Lepton Nucleus Scattering

Arie Bodek, Tejin Cai

备注：: 21 pages, 22 Figures, 11 Tables, Accepted for publication in Eur. Phys. J. C. 2019, all fits to Optical potential redone with respect to (q3+k)^2
发表信息：: Eur. Phys. J. C. (2019) 79: 293
DOI：: 10.1140/epjc/s10052-019-6750-3

摘要：

本文在冲量近似的框架下，研究了电子和中微子与束缚在原子核中的核子散射的结合能参数。讨论了结合能、缺失能、去除能（$ε$）、谱函数与壳模型能级之间的关系，并从ee $^{\prime}$ p谱函数数据中提取了更新的去除能参数.我们解决的不同参数从绑定质子和中子的散射。我们还使用包容的e-A数据提取的经验参数$U_{FSI}( (\vec q_3+\vec k)^2)$来解释末态核子（FSI）与核的光学势的相互作用。同样，我们用$V_{eff}$来解释原子核的库仑势。用三个参数$ε$、$U_{FSI}( (\vec q_3+\vec k)^2)$和$V_{eff}$，我们可以描述所有可用的电子QE散射数据的终态电子的能量。更新后的参数在中微子蒙特卡罗发生器中的使用减少了系统的不确定性，从$\pm$ 20兆电子伏到$\pm$ 5兆电子伏的组合去除能量（FSI校正）。

英文摘要：

We investigate the binding energy parameters that should be used in modeling electron and neutrino scattering from nucleons bound in a nucleus within the framework of the impulse approximation. We discuss the relation between binding energy, missing energy, removal energy ($ε$), spectral functions and shell model energy levels and extract updated removal energy parameters from ee$^{\prime}$p spectral function data. We address the difference in parameters for scattering from bound protons and neutrons. We also use inclusive e-A data to extract an empirical parameter $U_{FSI}( (\vec q_3+\vec k)^2)$ to account for the interaction of final state nucleons (FSI) with the optical potential of the nucleus. Similarly we use $V_{eff}$ to account for the Coulomb potential of the nucleus. With three parameters $ε$, $U_{FSI}( (\vec q_3+\vec k)^2)$ and $V_{eff}$ we can describe the energy of final state electrons for all available electron QE scattering data. The use of the updated parameters in neutrino Monte Carlo generators reduces the systematic uncertainty in the combined removal energy (with FSI corrections) from $\pm$ 20 MeV to $\pm$ 5 MeV.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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