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Scientific article
Open access
English

Nucleon binding energy and transverse momentum imbalance in neutrino-nucleus reactions

ContributorsMINERvA Collaboration
CollaboratorsBravar, Alessandro
Published inPhysical review. D, vol. 101, no. 9, 092001
Publication date2020
First online date2020-05-01
Abstract

We have measured new observables based on the final state kinematic imbalances in the mesonless production of νμ+A→μ-+p+X in the MINERνA tracker. Components of the muon-proton momentum imbalances parallel (δpTy) and perpendicular (δpTx) to the momentum transfer in the transverse plane are found to be sensitive to the nuclear effects such as Fermi motion, binding energy, and non-quasielastic (QE) contributions. The QE peak location in δpTy is particularly sensitive to the binding energy. Differential cross sections are compared to predictions from different neutrino interaction models. The Fermi gas models presented in this study cannot simultaneously describe features such as QE peak location, width, and the non-QE events contributing to the signal process. Correcting the genie’s binding energy implementation according to theory causes better agreement with data. Hints of proton left-right asymmetry are observed in δpTx. Better modeling of the binding energy can reduce the bias in neutrino energy reconstruction, and these observables can be applied in current and future experiments to better constrain nuclear effects.

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Keywords
  • Particle Physics Experiments
  • Nucleus: binding energy
  • Asymmetry: left-right
  • Neutrino nucleus: interaction
  • Neutrino nucleus: scattering
  • Interaction: model
  • Neutrino: energy
  • Differential cross section: measured
  • Transverse momentum dependence
  • Momentum transfer
  • Tracking detector
  • Transverse
  • Kinematics
  • Fermi gas
  • MINERvA
  • Numerical calculations: Monte Carlo
  • Experimental results
Citation (ISO format)
MINERvA Collaboration. Nucleon binding energy and transverse momentum imbalance in neutrino-nucleus reactions. In: Physical review. D, 2020, vol. 101, n° 9, p. 092001. doi: 10.1103/physrevd.101.092001
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Article (Published version)
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ISSN of the journal2470-0010
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