Scaling within the spectral function approach

Sobczyk J. E.; Rocco N.; Lovato A.; Nieves J.

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Scaling within the spectral function approach

机译：在光谱函数方法内进行缩放

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Scaling features of the nuclear electromagnetic response functions unveil aspects of nuclear dynamics that are crucial for interpreting neutrino-and electron-scattering data. In the large momentum-transfer regime, the nucleon-density response function defines a universal scaling function, which is independent of the nature of the probe. In this work, we analyze the nucleon-density response function of C-12, neglecting collective excitations. We employ particle and hole spectral functions obtained within two distinct many-body methods, both widely used to describe electroweak reactions in nuclei. We show that the two approaches provide compatible nucleon-density scaling functions that for large momentum transfers satisfy first-kind scaling. Both methods yield scaling functions characterized by an asymmetric shape, although less pronounced than that of experimental scaling functions. This asymmetry, only mildly affected by final state interactions, is mostly due to nucleon-nucleon correlations, encoded in the continuum component of the hole spectral function.

机译：核电响应功能的缩放特征揭示了对解释中微生和电子散射数据至关重要的核动力学的方面。在大的动量转移方案中，核心密度响应函数定义了通用缩放功能，其与探针的性质无关。在这项工作中，我们分析了C-12的核心密度响应函数，忽略了集体激励。我们采用在两个不同的多体方法中获得的粒子和孔光谱功能，均广泛用于描述细胞核中的电陶瓷反应。我们表明这两种方法提供了兼容的核心密度缩放功能，即大量转移满足第一种类缩放。两种方法都屈服缩放功能，其特征在于不对称形状，尽管比实验缩放功能不那么明显。该不对称性仅受到最终状态相互作用的温和性影响，主要是由于核心核聚核分相关性，在孔光谱功能的连续组分中编码。

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《Physical review, C》 |2018年第3期|共15页
作者
Sobczyk J. E.; Rocco N.; Lovato A.; Nieves J.;
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作者单位

Univ Valencia Inst Invest Paterna Inst Fis Corpuscular IFIC Ctr Mixto CSIC Apartado 22085 E-46071 Valencia Spain;

Univ Surrey Dept Phys Guildford GU2 7HX Surrey England;

Ist Nazl Fis Nucl TIFPA I-38123 Trento Italy;

Univ Valencia Inst Invest Paterna Inst Fis Corpuscular IFIC Ctr Mixto CSIC Apartado 22085 E-46071 Valencia Spain;

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正文语种 eng
中图分类原子核物理学、高能物理学;
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1. Scaling within the spectral function approach [J] . Sobczyk J. E., Rocco N., Lovato A., Physical review, C . 2018,第3期

机译：在光谱函数方法内进行缩放
2. Electromagnetic scaling functions within the Green’s function Monte Carlo approach [J] . N. Rocco, L. Alvarez-Ruso, A. Lovato, Physical Review C . 2017,第期

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3. Electromagnetic scaling functions within the Green's function Monte Carlo approach [J] . Rocco N., Alvarez-Ruso L., Lovato A., Physical review, C . 2017,第1期

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7. Scaling within the Spectral Function approach [O] . Sobczyk, J. E., Rocco, N., Lovato, A., 2017

机译：在光谱函数方法中缩放

Scaling within the spectral function approach

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