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Scientific article
Open access
English

Probing nuclear effects with neutrino-induced charged-current neutral pion production

ContributorsMINERvA Collaboration
CollaboratorsBravar, Alessandro
Published inPhysical review. D, vol. 102, no. 7, 072007
Publication date2020
First online date2020-10-19
Abstract

We study neutrino-induced charged-current (CC) π0 production on carbon nuclei using events with fully imaged final-state proton-π0 systems. Novel use of final-state correlations based on transverse kinematic imbalance enables the first measurements of the struck nucleon’s Fermi motion, of the intranuclear momentum transfer (IMT) dynamics, and of the final-state hadronic momentum configuration in neutrino pion production. Event distributions are presented for (i) the momenta of neutrino-struck neutrons below the Fermi surface, (ii) the direction of missing transverse momentum characterizing the strength of IMT, and (iii) proton-pion momentum imbalance with respect to the lepton scattering plane. The observed Fermi motion and IMT strength are compared to the previous MINERνA measurement of neutrino CC quasielastic-like production. The measured shapes and absolute rates of these distributions, as well as the cross section asymmetries, show tensions with predictions from current neutrino generator models.

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Keywords
  • Particle Physics Experiments
  • Neutrino nucleus: interaction
  • N: momentum
  • Momentum: difference
  • Pi0: neutrinoproduction
  • Neutrino: current
  • Carbon: nucleus
  • Carbon: target
  • Charged current
  • Pi0: particle identification
  • Mass spectrum: two-photon
  • Differential cross section: measured
  • Momentum dependence
  • Fermi surface
  • Initial state
  • Tension
  • Nuclear matter: effect
  • Numerical calculations: Monte Carlo
  • Data analysis method
  • Experimental results
Citation (ISO format)
MINERvA Collaboration. Probing nuclear effects with neutrino-induced charged-current neutral pion production. In: Physical review. D, 2020, vol. 102, n° 7, p. 072007. doi: 10.1103/physrevd.102.072007
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ISSN of the journal2470-0010
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