Identification of nuclear effects in neutrino-carbon interactions at low three-momentum transfer
| Autor: | Nuruzzaman, J. Wolcott, S. A. Dytman, D. Zhang, B. G. Tice, C. L. McGivern, N. Tagg, Ronald Ransome, M. Kiveni, T. Cai, J. R. Leistico, L. Fields, E. Miltenberger, A. M. Gago, L. Bellantoni, R. Galindo, A. Higuera, A. Bercellie, J. Mousseau, J. Osta, J. G. Morfín, John Miller, L. Ren, M. Wospakrik, K. Hurtado, T. Le, A. Norrick, D. W. Schmitz, R. Fine, E. Valencia, L. Aliaga, P. A. Rodrigues, C. E. Patrick, Juan C. Felix, H. Schellman, A. Mislivec, H. R. Gallagher, D. A. Martinez Caicedo, M. Betancourt, D. A. Harris, H. S. Budd, E. Maher, C. M. Marshall, T. Walton, Kevin Scott McFarland, A. Bravar, B. Messerly, R. Gran, W. A. Mann, O. Altinok, M. A. Ramírez, T. Golan, A. Lovlein, T. Muhlbeier, M. Elkins, A. M. McGowan, V. Paolone, J. K. Nelson, J. Kleykamp, D. Ruterbories, Gabriel Perdue, D. Rimal, G. A. Díaz, M. F. Carneiro, C. J. Solano Salinas, J. Devan, G. Zavala, J. Demgen, M. Kordosky, J. Chvojka, B. Eberly, H. Ray, S. Manly, Anushree Ghosh, Arie Bodek, D. Naples |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Physics
Particle physics education.field_of_study Muon 010308 nuclear & particles physics Scattering Momentum transfer Population Nuclear Theory General Physics and Astronomy FOS: Physical sciences 7. Clean energy 01 natural sciences Resonance (particle physics) 3. Good health High Energy Physics - Experiment Nuclear physics High Energy Physics - Experiment (hep-ex) 0103 physical sciences Neutrino 010306 general physics Nucleon education Neutrino oscillation Nuclear Experiment |
| DOI: | 10.48550/arxiv.1511.05944 |
| Popis: | 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 $\nu_\mu$ interactions is combined with muon kinematics to permit separation of the quasielastic and $\Delta$(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 $\Delta$ resonance processes are needed to describe the data. The data in this kinematic region also has an enhanced population of multi-proton 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. Comment: 7 pages, 3 figures, supplemental material. v2 includes updates from the review process. v3 includes ancillary files. v4 fixes incorrect exponent in Fig. 2 and supplemental files, synchronized with the erratum in the journal version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|