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Measurement of the multineutron νμ charged current differential cross section at low available energy on hydrocarbon
Journal article   Open access   Peer reviewed

Measurement of the multineutron νμ charged current differential cross section at low available energy on hydrocarbon

A. Olivier, T. Cai, S. Akhter, Z. Ahmad Dar, V. Ansari, M. Ascencio, M. Sajjad Athar, A. Bashyal, A. Bercellie, M. Betancourt, …
Physical review. D, v 108(11), 112010
18 Dec 2023
url
https://doi.org/10.1103/PhysRevD.108.112010View
Published, Version of Record (VoR) Open

Abstract

Astronomy & Astrophysics Physics, Particles & Fields Science & Technology Physical Sciences Physics
Neutron production in antineutrino interactions can lead to bias in energy reconstruction in neutrino oscillation experiments, but these interactions have rarely been studied. MINERvA previously studied neutron production at an average antineutrino energy of similar to 3 GeV in 2016 and found deficiencies in leading models. In this paper, the MINERvA 6 GeV average antineutrino energy dataset is shown to have similar disagreements. A measurement of the cross section for an antineutrino to produce two or more neutrons and have low visible energy is presented as an experiment-independent way to explore neutron production modeling. This cross section disagrees with several leading models' predictions. Neutron modeling techniques from nuclear physics are used to quantify neutron detection uncertainties on this result.

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