arXiv 0812.05872008-12nucl-thhep-exhep-ph

从准弹性区到共振区的电子-和中微子-核散射

Electron- and neutrino-nucleus scattering from the quasielastic to the resonance region

T. Leitner, O. Buss, L. Alvarez-Ruso, U. Mosel

备注：: v2: misprints corrected; published in Phys. Rev. C
发表信息：: Phys.Rev.C79:034601,2009
DOI：: 10.1103/PhysRevC.79.034601

摘要：

我们提出了一个模型的电子和中微子散射的核子和原子核的准弹性和共振区的重点。轻子-核子反应描述在相对论的形式主义，其中包括，除了准弹性散射，激发13 N* 和德尔塔共振和非共振单π背景。最新的电子散射数据用于最先进的矢量形状因子的参数化;轴向耦合通过PCAC确定，在Delta共振的情况下，轴向形状因子使用中微子散射数据进行改装。在考虑各种核效应的GiBUU框架内处理核散射：核基态的局部密度近似，平均场势和介质中的谱函数。包容性的散射氧的结果，并在电子诱导的反应的情况下，与实验数据和其他模型。

英文摘要：

We present a model for electron- and neutrino-scattering off nucleons and nuclei focussing on the quasielastic and resonance region. The lepton-nucleon reaction is described within a relativistic formalism that includes, besides quasielastic scattering, the excitation of 13 N* and Delta resonances and a non-resonant single-pion background. Recent electron-scattering data is used for the state-of-the-art parametrizations of the vector form factors; the axial couplings are determined via PCAC and, in the case of the Delta resonance, the axial form factor is refitted using neutrino-scattering data. Scattering off nuclei is treated within the GiBUU framework that takes into account various nuclear effects: the local density approximation for the nuclear ground state, mean-field potentials and in-medium spectral functions. Results for inclusive scattering off Oxygen are presented and, in the case of electron-induced reactions, compared to experimental data and other models.

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英文摘要：

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