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Measurement of final-state correlations in neutrino muon-proton mesonless production on hydrocarbon at $\langle E_\nu\rangle=3$ GeV
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abstract
Final-state kinematic imbalances are measured in mesonless production of $\nu_\mu + A \to \mu^- + p + X$ in the MINERvA tracker. Initial- and final-state nuclear effects are probed using the direction of the $\mu^-$-p transverse momentum imbalance and the initial-state momentum of the struck neutron. Differential cross sections are compared to predictions based on current approaches to medium modeling. These models under-predict the cross section at intermediate intranuclear momentum transfers that generally exceed the Fermi momenta. As neutrino interaction models need to correctly incorporate the effect of the nucleus in order to predict neutrino energy resolution in oscillation experiments, this result points to a region of phase space where additional cross section strength is needed in current models, and demonstrates a new technique that would be suitable for use in fine grained liquid argon detectors where the effect of the nucleus may be even larger.
Forward citations
Cited by 3 Pith papers
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Two-particle two-hole excitations in semi-inclusive neutrino-nucleus scattering
First fully microscopic, relativistic calculation of the 2p2h MEC contribution to semi-inclusive neutrino-carbon (νμ, μ−p) cross sections, with T2K flux-folded predictions.
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Comparisons of triple-differential cross sections for quasielastic-like $\nu_\mu$-hydrocarbon interactions using $\langle E_\nu\rangle \sim$ 3~GeV versus $\sim$ 6~GeV beams in MINERvA
MINERvA compares quasielastic-like cross sections at two neutrino beam energies and finds discrepancies pointing to overestimated final state interactions for protons and pions.
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Elastic hadron-nucleus scattering in neutrino-nucleus reactions and transverse kinematics measurements
Fixing an error in GENIE's elastic hadron-nucleus scattering code reduces large distortions in transverse kinematic imbalance distributions for quasielastic neutrino events while having milder effects on other observables.
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