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

Abstract:
We study neutrino-induced charged-current (CC) π 0 production on carbon nuclei using events with fully imaged final-state proton-π 0 systems. Novel use of final-state correlations based on transverse kinematic imbalance enable 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.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevD.102.072007

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
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Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Department:
PHYSICS
Sub department:
Particle Physics
Oxford college:
Pembroke College
Role:
Author


Publisher:
American Physical Society
Journal:
Physical Review D More from this journal
Volume:
102
Article number:
072007
Publication date:
2020-10-19
Acceptance date:
2020-09-28
DOI:
EISSN:
2470-0029
ISSN:
2470-0010


Language:
English
Keywords:
Pubs id:
1135275
Local pid:
pubs:1135275
Deposit date:
2020-09-28

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