Identification of Nuclear Effects in Neutrino-Carbon Interactions at Low Three-Momentum Transfer Public Deposited

http://ir.library.oregonstate.edu/concern/articles/cn69m590v

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by the American Physical Society and can be found at:  http://journals.aps.org/prl/

See Supplemental Material at  http://link.aps.org/ supplemental/10.1103/PhysRevLett.116.071802 for tables of the flux, cross section, and uncertainty covariance matrix.

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  • Two different nuclear-medium effects are isolated using a low three-momentum transfer subsample of neutrino-carbon scattering data from the MINERvA neutrino experiment. The observed hadronic energy in charged-current ν[subscript]μ interactions is combined with muon kinematics to permit separation of the quasielastic and Δ(1232) resonance processes. First, we observe a small cross section at very low energy transfer that matches the expected screening effect of long-range nucleon correlations. Second, additions to the event rate in the kinematic region between the quasielastic and Δ resonance processes are needed to describe the data. The data in this kinematic region also have an enhanced population of multiproton final states. Contributions predicted for scattering from a nucleon pair have both properties; the model tested in this analysis is a significant improvement but does not fully describe the data. We present the results as a double-differential cross section to enable further investigation of nuclear models. Improved description of the effects of the nuclear environment are required by current and future neutrino oscillation experiments.
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  • Rodrigues, P. A., Demgen, J., Miltenberger, E., Aliaga, L., Altinok, O., Bercellie, A., ... & Zhang, D. (2016). Identification of nuclear effects in neutrino-carbon interactions at low three-momentum transfer. Physical Review Letters, 116(7), 071802. doi:10.1103/PhysRevLett.116.071802
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