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

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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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  • 116
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  • 7
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  • This work was supported by the Fermi National Accelerator Laboratory under U.S. Department of Energy Contract No. DE-AC02-07CH11359, which included the MINERvA construction project. Construction support was also granted by the United States National Science Foundation under Grant No. PHY-0619727 and by the University of Rochester. Support for scientists for this specific publication was granted by the United States National Science Foundation under Grant No. PHY-1306944. Support for participating scientists was provided by NSF and DOE (USA) by CAPES and CNPq (Brazil), by CoNaCyT (Mexico), by CONICYT (Chile), by CONCYTEC, DGI-PUCP and IDI/IGI-UNI (Peru), and by Latin American Center for Physics (CLAF).
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  • description.provenance : Made available in DSpace on 2016-03-17T14:21:55Z (GMT). No. of bitstreams: 2 krauserp1876337701.zip: 156066 bytes, checksum: fe82757bca534e3fb5931d2fd2e4f940 (MD5) RodriguesIdentificationNuclearEffects.pdf: 228869 bytes, checksum: de6d2b04aa031b43b49cbf53e03b31b3 (MD5) Previous issue date: 2016-02-17
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