Identification of nuclear effects in neutrino-carbon interactions at low three-momentum transfer
Collaboration
6 pages
Published in:
- Phys.Rev.Lett. 116 (2016) 071802,
- Phys.Rev.Lett. 121 (2018) 20, 209902 (addendum)
- Published: Feb 17, 2016
e-Print:
- 1511.05944 [hep-ex]
DOI:
Report number:
- FERMILAB-PUB-15-498-ND
Experiments:
Citations per year
Abstract: (APS)
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 νμ 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.Note:
- 7 pages, 3 figures, supplemental material. v2 includes updates from the review process. v3 includes ancillary files
- 13.15.+g
- 25.30.Pt
- neutrino nucleon: inelastic scattering
- nuclear matter: effect
- effect: long-range
- screening: effect
- energy: low
- neutrino: oscillation
- nucleon: correlation
- energy: hadronic
References(0)
Figures(4)
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