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

Bogart, B.; Gallmeister, K.; Mosel, U.

doi:10.1103/PhysRevC.110.044001

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

Journal Article · 10 October 2024 · Physical Review. C

DOI: https://doi.org/10.1103/PhysRevC.110.044001 · OSTI ID:2462834

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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 $N N$ in-medium modifications on neutrino-nucleus cross section predictions using the GiBUU transport model. We find that including an in-medium lowering of the $N N$ cross section and density dependence on $Δ$ 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 $Δ$ resonance is also investigated. The absence of $Δ$ broadening is slightly favored, but the larger uncertainties on the pion production data prevent definitive conclusions. Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0007859

OSTI ID:: 2462834

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 4 Vol. 110; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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