Measurement of charged-current muon neutrino-argon interactions without pions in the final state using the MicroBooNE detector
Pith reviewed 2026-05-19 06:26 UTC · model grok-4.3
The pith
This measurement of charged-current muon neutrino interactions on argon with no pions in the final state shows good agreement with neutrino event generators in single-differential cross sections, but only a subset of generators describe the
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
The work reports new flux-integrated differential cross sections for charged-current muon neutrino-argon interactions without final-state pions. These are given in single- and double-differential form with respect to the final-state muon momentum and angle. The data agree well with single-differential predictions from common generators, but only a subset of generators also match the double-differential distributions. The measurement supports comparisons with Cherenkov detector results at the same beam.
What carries the argument
The single- and double-differential cross sections in final-state muon momentum and angle for pionless charged-current muon neutrino interactions on argon, extracted from selected data after efficiency corrections and background subtraction.
Load-bearing premise
The observed event rates can be accurately converted to cross sections using the predicted beam flux, the simulated detector response, and the estimated backgrounds.
What would settle it
A new measurement or reanalysis with significantly different flux or background assumptions producing cross-section values outside the reported error bands would falsify the central results.
Figures
read the original abstract
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 ($\nu_\mu\mathrm{CC}0\pi$). 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 $1.3\times10^{21}$ 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.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript reports a measurement of flux-integrated single- and double-differential cross sections for charged-current muon neutrino interactions on argon with no pions in the final state (ν_μ CC0π) using the MicroBooNE LArTPC. The data correspond to an exposure of 1.3×10^{21} protons on target collected 2015–2020 at the Booster Neutrino Beam. Results are presented as functions of final-state muon momentum and angle and compared to several neutrino event generators; the authors report good agreement in the single-differential distributions while only a subset of generators adequately describe the double-differential data.
Significance. If the extraction is shown to be robust, the measurement supplies valuable differential data on pionless (quasielastic-like) interactions on argon, directly relevant to DUNE and other LArTPC experiments. The topological selection and comparison with Cherenkov-detector results at the same beamline add utility for model validation across detector technologies.
major comments (2)
- [Cross-section extraction and unfolding] The double-differential comparison is only interpretable if the unfolded flux-integrated cross sections are free of significant kinematic-dependent bias from the flux prediction, detector response simulation, and background subtraction. These ingredients enter the efficiency correction and unfolding; any mismodeling that varies with muon angle or momentum would preferentially distort the double-differential bins and could produce the reported pattern of generator agreement without reflecting true physics deficiencies. The manuscript should include a dedicated study (e.g., in the systematic-uncertainty or results section) showing the stability of the χ² or agreement metrics under controlled variations of flux normalization and background models.
- [Systematic uncertainties] Details on how systematic uncertainties from detector response and background modeling are evaluated and propagated to the double-differential bins are insufficient to assess whether the claim that “only a subset of generators adequately describe the data” is robust. This information is load-bearing for the central comparison result.
minor comments (2)
- [Abstract] The abstract would benefit from a brief statement of the number of selected events and the dominant uncertainty sources to convey the measurement precision.
- [Results figures] In the double-differential figures, ensure generator predictions are overlaid with their own uncertainty bands and that bin-by-bin data uncertainties are clearly indicated.
Simulated Author's Rebuttal
We thank the referee for their careful and constructive review of our manuscript. The comments raise important points about the robustness of the double-differential results and the clarity of the systematic uncertainty treatment. We have addressed both major comments by expanding the manuscript with additional studies and details, as described below.
read point-by-point responses
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Referee: [Cross-section extraction and unfolding] The double-differential comparison is only interpretable if the unfolded flux-integrated cross sections are free of significant kinematic-dependent bias from the flux prediction, detector response simulation, and background subtraction. These ingredients enter the efficiency correction and unfolding; any mismodeling that varies with muon angle or momentum would preferentially distort the double-differential bins and could produce the reported pattern of generator agreement without reflecting true physics deficiencies. The manuscript should include a dedicated study (e.g., in the systematic-uncertainty or results section) showing the stability of the χ² or agreement metrics under controlled variations of flux normalization and background models.
Authors: We agree that a dedicated stability study strengthens the interpretation of the double-differential comparisons. While the original analysis already included extensive validation of the unfolding and efficiency corrections (including closure tests and data-driven checks), we have added a new subsection (Section 7.4) in the revised manuscript. This subsection presents controlled variations of the flux normalization (by ±5% and ±10%) and background model parameters (within their estimated uncertainties), with the χ² agreement metrics recomputed for each generator in the double-differential distributions. The results confirm that the pattern of partial agreement persists across these variations, indicating that the observed differences are not driven by kinematic-dependent biases in the extraction procedure. revision: yes
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Referee: [Systematic uncertainties] Details on how systematic uncertainties from detector response and background modeling are evaluated and propagated to the double-differential bins are insufficient to assess whether the claim that “only a subset of generators adequately describe the data” is robust. This information is load-bearing for the central comparison result.
Authors: We acknowledge that the original text provided insufficient explicit detail on the evaluation and propagation steps. Detector response uncertainties were determined through a combination of simulation parameter variations (e.g., for recombination, diffusion, and space charge) validated against control samples, while background modeling uncertainties were constrained using dedicated sideband regions. These were propagated to the unfolded cross sections using a full covariance matrix approach. In the revised manuscript we have substantially expanded Sections 6 (Systematic Uncertainties) and 8 (Results), adding step-by-step descriptions of the procedures, explicit propagation formulas, and new figures that break down the relative uncertainty contributions bin-by-bin in the double-differential distributions. The full covariance matrices are now also provided in the supplementary material. revision: yes
Circularity Check
No circularity: direct experimental cross-section extraction from data
full rationale
The paper performs a standard flux-integrated cross-section measurement using observed event rates in the MicroBooNE LArTPC after selection, efficiency correction, background subtraction, and unfolding. These steps are conventional analysis procedures whose outputs are not defined in terms of the reported cross sections themselves. Generator comparisons are external benchmarks and do not enter the extraction. No self-definitional steps, fitted inputs renamed as predictions, or load-bearing self-citations appear in the derivation chain. The result remains independent of the paper's own fitted parameters.
Axiom & Free-Parameter Ledger
free parameters (1)
- Neutrino flux normalization
axioms (1)
- domain assumption Detector response and reconstruction efficiencies are accurately modeled in simulation
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discussion (0)
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