In-medium changes of nucleon cross sections tested in neutrino-induced reactions

被引：2
作者：
Bogart, B. [1 ]
Gallmeister, K. [2 ]
Mosel, U. [2 ]
机构：
[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
[2] Univ Giessen, Inst Theoret Phys, D-35392 Giessen, Germany
来源：
PHYSICAL REVIEW C | 2024年 / 110卷 / 04期
关键词：
MICROSCOPIC CALCULATION; MATTER;
D O I：
10.1103/PhysRevC.110.044001
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Historically, studied in the context of heavy-ion collisions, the extent to which free nucleon-nucleon cross sections are modified in-medium remains undetermined by these data sets. Therefore, we investigate the impact of NN in-medium modifications on neutrino-nucleus cross section predictions using the GiBUU transport model. We find that including an in-medium lowering of the NN cross section and density dependence on A excitation improves agreement with MicroBooNE neutrino-argon scattering data. This is observed for both proton and neutral pion spectra in charged-current muon neutrino and neutral-current single pion production data sets. The impact of collision broadening of the A resonance is also investigated. The absence of A broadening is slightly favored, but the larger uncertainties on the pion production data prevent definitive conclusions.
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页数：6
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