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Title: CCQE, 2p2h excitations and ν—energy reconstruction

We analyze the MiniBooNE muon neutrino CCQE-like dσ/dT{sub μ} d cos θ{sub μ} data using a theoretical model that, among other nuclear effects, includes RPA correlations and 2p2h (multinucleon) mechanisms. These corrections turn out to be essential for the description of the data. We find that MiniBooNE CCQE-like data are fully compatible with former determinations of the nucleon axial mass M{sub A} ∼ 1.05 GeV. This is in sharp contrast with several previous analysis where anomalously large values of M{sub A} ∼ 1.4 GeV have been suggested. We also show that because of the the multinucleon mechanism effects, the algorithm used to reconstruct the neutrino energy is not adequate when dealing with quasielastic-like events. Finally, we analyze the MiniBooNE unfolded cross section, and show that it exhibits an excess (deficit) of low (high) energy neutrinos, which is an artifact of the unfolding process that ignores 2p2h mechanisms.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Instituto de Física Corpuscular (IFIC), Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, E-46071 Valencia (Spain)
  2. Dipartimento di Fisica, Università di Trento, I-38123 Trento (Italy)
  3. Institut de Fisica d'Altes Energies (IFAE), Bellaterra Barcelona (Spain)
  4. Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, E-46071 Valencia (Spain)
Publication Date:
OSTI Identifier:
22391815
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1663; Journal Issue: 1; Conference: NuINT12: 8. International Workshop on Neutrino-Nucleus Internactions in the Few-GeV Region, Rio de Janeiro (Brazil), 22-27 Oct 2012; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALGORITHMS; CORRECTIONS; CORRELATIONS; DIFFERENTIAL CROSS SECTIONS; EXCITATION; GEV RANGE; MUON NEUTRINOS; NEUTRINO-NUCLEON INTERACTIONS; NUCLEONS; QUASI-ELASTIC SCATTERING; RANDOM PHASE APPROXIMATION; REST MASS