CCQE, 2p2h excitations and ν—energy reconstruction

Journal Article · Fri May 15 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4919493· OSTI ID:22391815

Nieves, J. ^[1]; Simo, I. Ruiz ^[2]; Sánchez, F. ^[3]; Vacas, M. J. Vicente ^[4]

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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)

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.

• OSTI ID: 22391815
• Journal Information: AIP Conference Proceedings, Vol. 1663, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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