T2K · 2025

First Measurement of the Electron-Neutrino Charged-Current Pion Production Cross Section on Carbon with the T2K Near Detector

Phys.Rev.Lett. 135 151802 · 10.1103/klhv-7t6h

arXiv:2505.00516 Journal INSPIRE All papers

Measurements

Current	Flavor	Target	Topology	Type	Observables	Energy
CC	νe	CH	CC1π+	single-diff	first nue CC pion production, differential in e and pi kinematics	T2K ND280

Abstract

The T2K Collaboration presents the first measurement of electron neutrino-induced charged-current pion production on carbon in a restricted kinematical phase space. This is performed using data from the 2.5 $^°$ off-axis near detector, ND280. The differential cross sections with respect to the outgoing electron and pion kinematics, in addition to the total flux-integrated cross section, are obtained. Comparisons between the measured and predicted cross section results using the Neut, Genie and NuWro Monte Carlo event generators are presented. The measured total flux-integrated cross section is [2.52 $\pm$ 0.52 (stat) $\pm$ 0.30 (sys)] x $10^{-39}$ cm $^2$ nucleon $^{-1}$ , which is lower than the event generator predictions.

Citation

@article{T2K:2025smz,
  collaboration = "T2K",
  title = "{First Measurement of the Electron-Neutrino Charged-Current Pion Production Cross Section on Carbon with the T2K Near Detector}",
  eprint = "2505.00516",
  doi = "10.1103/klhv-7t6h",
  journal = "Phys.Rev.Lett.",
  volume = "135",
  pages = "151802",
  year = "2025",
}