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Creators/Authors contains: "Majeed, N"

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  1. We report results from an updated search for neutral current (NC) resonant Δ ( 1232 ) baryon production and subsequent Δ radiative decay (NC Δ N γ ). We consider events with and without final state protons; events with a proton can be compared with the kinematics of a Δ ( 1232 ) baryon decay, while events without a visible proton represent a more generic phase space. In order to maximize sensitivity to each topology, we simultaneously make use of two different reconstruction paradigms, Pandora and Wire-Cell, which have complementary strengths, and select mostly orthogonal sets of events. Considering an overall scaling of the NC Δ N γ rate as an explanation of the MiniBooNE anomaly, our data exclude this hypothesis at 94.4% CL. When we decouple the expected correlations between NC Δ N γ events with and without final state protons, our data exclude an interpretation in which all excess events have associated protons at 2.0 σ , and are consistent with an interpretation in which all excess events have no associated protons at  0.63 σ
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    Free, publicly-accessible full text available November 17, 2026
  2. We report a new measurement of flux-integrated differential cross sections for charged-current (CC) muon neutrino interactions with argon nuclei that produce no final-state pions ( ν μ CC 0 π ). These interactions are of particular importance as a topologically defined signal dominated by quasielasticlike interactions. This measurement was performed with the MicroBooNE liquid argon time projection chamber detector located at the Fermilab Booster Neutrino Beam and uses an exposure of 1.3 × 10 21 protons on target collected between 2015 and 2020. The results are presented in terms of single- and double-differential cross sections as a function of the final-state muon momentum and angle. The data are compared with widely used neutrino event generators. We find good agreement with the single-differential measurements, while only a subset of generators are also able to adequately describe the data in double-differential distributions. This work facilitates comparison with Cherenkov detector measurements, including those located at the Booster Neutrino Beam. 
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    Free, publicly-accessible full text available October 1, 2026