We study neutrino-induced charged-current (CC) production on carbon nuclei using events with fully imaged final-state proton- 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 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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"surname": "Zazueta",
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"full_name": "Zazueta, L."
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"title": "Probing nuclear effects with neutrino-induced charged-current neutral pion production"
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"journal_title": "Physical Review D",
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"year": 2020
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"year": "2020"
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"value": "<math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mrow><mi>MINER</mi><mi>\u03bd</mi><mi mathvariant=\"normal\">A</mi></mrow></math> Collaboration"
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"abstracts": [
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"value": "We study neutrino-induced charged-current (CC) <math><msup><mi>\u03c0</mi><mn>0</mn></msup></math> production on carbon nuclei using events with fully imaged final-state proton-<math><msup><mi>\u03c0</mi><mn>0</mn></msup></math> systems. Novel use of final-state correlations based on transverse kinematic imbalance enables the first measurements of the struck nucleon\u2019s 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 <math><mi>MINER</mi><mi>\u03bd</mi><mi>A</mi></math> 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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