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arXiv 2310.02007nucl-th
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准弹性区及超出准弹性区的单举轻子-核散射核模型

Nuclear models for inclusive lepton-nucleus scattering in the quasi-elastic region and beyond

Valerio Belocchi, Maria Benedetta Barbaro, Arturo De Pace, Marco Martini

AI总结:

本文系统比较了准弹性区轻子-核散射的多种核模型,并结合电子散射数据检验其有效性,同时展示了双粒子-双空穴激发贡献的初步微观计算结果。

摘要:

中微子振荡实验中的高精度测量要求对轻子-核散射过程进行非常精确的描述。目前已有若干截面计算可用,但不同模型预言之间仍存在重要差异。对于由单粒子-单空穴激发主导的准弹性道,本文概述了若干核模型——具体包括相对论费米气体、SuperScaling方法、谱函数、Hartree-Fock和随机相位近似——并与电子-核散射数据进行比较;电子-核散射是检验理论模型有效性的一个非常重要的过程,本文着重说明了每种方法的具体特征。此外,本文还介绍了一项正在进行的关于双粒子-双空穴激发对电磁响应贡献的微观计算,并给出了一些初步结果。

英文摘要:

High-precision measurements in neutrino oscillation experiments require a very accurate description of the lepton-nucleus scattering process. Several cross-section calculations are available, but important discrepancies are still present between different model predictions. For the quasi-elastic channel, dominated by one particle-one hole excitations, an overview over several nuclear models - specifically Relativistic Fermi Gas, SuperScaling Approach, Spectral Function, Hartree-Fock and Random Phase Approximation - is presented and compared with data for electron-nucleus scattering, a very important process for testing theoretical models validity, highlighting the specific features of each approach. Furthermore an ongoing microscopic calculation of the two particle-two hole excitations contribution to the electromagnetic response is presented, and some preliminary results are shown.

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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