Electromagnetic responses induced by one- and two-body nuclear currents in inclusive electron-nucleus scattering
Abstract
The longitudinal and transverse nuclear response functions encode information about the electromagnetic behavior of the nuclear target probed in inclusive electron-nucleus scattering. We present a microscopic calculation based on an independent-particle model, where a non-relativistic nuclear mean-field potential governs both the initial and final hadronic states of the interaction. We add dynamically generated short-range nucleon-nucleon correlations (SRCs), as well as meson-exchange currents (MECs) derived from one-pion exchange and intermediate Δ-resonance excitation. We evaluate the contributions from one- and two-nucleon knock-out reactions to nuclear responses in inclusive electron scattering from 12C in the quasielastic and dip regions. We demonstrate that for quasielastic kinematics, SRCs quench both nuclear responses, while the MECs enhance the transverse signal, substantially improving the predicted transverse-to-longitudinal ratio. In the dip region between the quasielastic and the Δ-resonance peaks, we find that the observed excess of transverse strength originates mainly from explicit two-nucleon knock-out following a Δ-resonance excitation.
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BibTeX
@misc{niewczas2026electromagnetic,
title = {{Electromagnetic responses induced by one- and two-body nuclear currents in inclusive electron-nucleus scattering}},
author = {Kajetan Niewczas and Ashish Kumar Jha and Raúl González-Jiménez and Natalie Jachowicz and Alexis Nikolakopoulos and Jan Ryckebusch},
howpublished = {HAL},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.31044},
eprint = {2608.31044},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05743315v1},
}
RIS
TY - UNPB
TI - Electromagnetic responses induced by one- and two-body nuclear currents in inclusive electron-nucleus scattering
AU - Kajetan Niewczas
AU - Ashish Kumar Jha
AU - Raúl González-Jiménez
AU - Natalie Jachowicz
AU - Alexis Nikolakopoulos
AU - Jan Ryckebusch
PY - 2026
DA - 2026/08/31
PB - HAL
DO - 10.48550/arxiv.2608.31044
UR - https://hal.science/hal-05743315v1
AB - The longitudinal and transverse nuclear response functions encode information about the electromagnetic behavior of the nuclear target probed in inclusive electron-nucleus scattering. We present a microscopic calculation based on an independent-particle model, where a non-relativistic nuclear mean-field potential governs both the initial and final hadronic states of the interaction. We add dynamically generated short-range nucleon-nucleon correlations (SRCs), as well as meson-exchange currents (MECs) derived from one-pion exchange and intermediate Δ-resonance excitation. We evaluate the contributions from one- and two-nucleon knock-out reactions to nuclear responses in inclusive electron scattering from ^12C in the quasielastic and dip regions. We demonstrate that for quasielastic kinematics, SRCs quench both nuclear responses, while the MECs enhance the transverse signal, substantially improving the predicted transverse-to-longitudinal ratio. In the dip region between the quasielastic and the Δ-resonance peaks, we find that the observed excess of transverse strength originates mainly from explicit two-nucleon knock-out following a Δ-resonance excitation.
ER -