Data release for the NOvA muon antineutrino charged-current (CC) pi^0 cross section presented in arXiv:2511.05807.
The signal for this analysis is defined as muon antineutrino CC interactions in the fiducial volume of the NOvA near detector (a 2.7 m × 2.7 m × 9.0 m region) that produce at least one pi^0 in the final state emerging from the nucleus, within the phase space of muon momentum [0.5, 2.5) GeV/c and muon angle [0, 60) degree, as described in arXiv:2511.05807.
The released zip file contains two files:
NOvA_NumubarCCPi0_DataRelease.root
README.txt
The ROOT file includes the cross-section results as well as the statistical and systematic covariance matrices for each variable used in this analysis. The README provides a detailed description of the contents of the data release.
Official Flux:
The flux used in this analysis is available from the NOvA Public Docs: https://publicdocs.fnal.gov/cgi-bin/ShowDocument?docid=8.
File structure --- The ROOT file contains the following TDirectories:
pi0p - pi^0 momentum distributions
pi0dir - pi^0 angular distributions
muonp - muon momentum distributions
muondir - muon angular distributions
Q2 - reconstructed Q^2 distributions
Wmass - reconstructed W_mass distributions
Each directory contains three histograms:
xsec (TH1D): Cross section result
cov_stat (TH2D): Statistical covariance matrix
cov_syst (TH2D): Systematic covariance matrix
Usage notes:
- xsec gives the measured differential cross section w.r.t. the corresponding variable.
- cov_stat and cov_syst provide the full covariance matrices.
- The bin definitions and kinematic phase spaces follow those used in arXiv:2511.05807.
Citation --- If you use these data, please cite: NOvA Collaboration, arXiv:2511.05807.
