Nuclear effects in electron-nucleus and neutrino-nucleus scattering within a relativistic quantum mechanical framework

González-Jiménez, R.; Nikolakopoulos, Alexis; Jachowicz, Natalie; Udı́as, J. M.

doi:10.1103/physrevc.100.045501

Cited by 60 publications

(89 citation statements)

References 72 publications

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“…Theoretical studies have attempted to provide a description of the nuclear weak response in this wide range of energy and momentum transfers. They typically rely on a relativistic Fermi gas (RFG) [2][3][4] or relativistic mean-field (RMF) [5][6][7][8] picture of the nucleus. Some theoretical models, notably those of Refs.…”

Section: Introductionmentioning

confidence: 99%

Ab Initio Study of (νℓ,ℓ−) and (ν¯<

et al. 2020

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We carry out an ab initio calculation of the neutrino flux-folded inclusive cross sections measured on 12 C by the MiniBooNE and T2K Collaborations in the charged-current quasielastic regime. The calculation is based on realistic two-and three-nucleon interactions, and on a realistic nuclear electroweak current with one-and two-nucleon terms that are constructed consistently with these interactions and reproduce lowenergy electroweak transitions. Numerically exact quantum Monte Carlo methods are utilized to compute the nuclear weak response functions, by fully retaining many-body correlations in the initial and final states and interference effects between one-and two-body current contributions. We employ a nucleon axial form factor of the dipole form with Λ A ¼ 1.0 or 1.15 GeV, the latter more in line with a very recent lattice QCD determination. The calculated cross sections are found to be in good agreement with the neutrino data of MiniBooNE and T2K, and antineutrino MiniBooNE data, yielding a consistent picture of nuclei and their electroweak properties across a wide regime of energy and momenta.

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Section: Introductionmentioning

confidence: 99%

Ab Initio Study of (νℓ,ℓ−) and (ν¯<

et al. 2020

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“…To show the effect of orthogonality the Pauli-blocked RPWIA (PB-RPWIA) was introduced in Ref. [6] where a plane wave for the knocked out nucleon is orthogonalized with respect to the bound states of the potential. In Ref.…”

Section: Modeling Charged-current Neutrino Nucleus Scatteringmentioning

confidence: 99%

Non-trivial differences between charged current $ν_e$ and $ν_μ$ induced interactions with nuclei

Nikolakopoulos¹,

Jachowicz²,

Gonzalez-Jimenez³

et al. 2020

Proceedings of the 21st International Workshop on Neutrinos From Accelerators — PoS(NuFact2019)

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The difference between electron and muon neutrino charged-current cross sections has attracted quite some interest over the past few years. This interest is guided by the experimental effort that aims at measuring the CP-violating phase by looking for electron (anti-)neutrino appearance in (anti-)muon neutrino beams [1]. In long-baseline experiments such as T2K, models for the neutrino cross section are often constrained by near-detector data, with a muon neutrino flux that is unoscillated. Non-trivial differences between electron and muon neutrino cross sections are currently experimentally not well constrained, and different models give varying results, especially in kinematic regions where nuclear structure details become important, i.e. for low energy and momentum transfers [2,3]. In this work we present the nuclear response and cross section using different nuclear models, for forward lepton scattering in the region of E ν of a couple 100 MeVs. In this kinematic region the cross section is sensitive to nuclear structure details which are not accounted for in simplified models such as the relativistic Fermi gas (RFG) which is commonly used in the experimental analyses. The results show that it is important for current and future accelerator-based experiments, notably T2K [1] and the short-baseline oscillation program (i.e the MicroBooNE, SBND and ICARUS experiments) which are sensitive to the several 100 MeV region, to take nuclear structure details into account in their analyses.The 21st international workshop on neutrinos from accelerators (NuFact2019) August 26 -August 31, 2019 Daegu, Korea * Speaker.

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“…As a general constraint any nuclear model aiming to describe neutrino-nucleus interaction should be first tested against electron scattering data. Starting with the simple relativistic Fermi Gas (RFG), still widely used in the analysis of neutrino oscillation data, models with different levels of complexity have been applied to weak interaction processes: nuclear spectral function [6][7][8][9], relativistic mean field [10][11][12][13][14][15], relativistic Green's function (RGF) [16][17][18][19], random phase approximation (RPA) [20][21][22], scaling-based approaches [10,13,[23][24][25][26][27], and ab initio Green's function Monte Carlo (GFMC) [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Semi-inclusive charged-current neutrino-nucleus cross sections in the relativistic plane-wave impulse approximation

et al. 2020

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Neutrino-nucleus quasielastic scattering is studied in the plane-wave impulse approximation for three nuclear models: the relativistic Fermi gas (RFG), the independent-particle shell model (IPSM), and the natural orbitals (NO) model with Lorentzian dependence of the excitation energy. A complete study of the kinematics of the semi-inclusive process and the associated cross sections are presented and discussed for 40 Ar and 12 C. Inclusive cross sections are also obtained by integrating the semi-inclusive expressions over the outgoing hadron. Results are consistent with previous studies restricted to the inclusive channel. In particular, a comparison with the analytical results for the RFG model is performed. Explicit expressions for the hadronic tensor and the 10 semiinclusive nuclear responses are given. Theoretical predictions are compared with semi-inclusive experimental data from T2K experiment.

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Nuclear effects in electron-nucleus and neutrino-nucleus scattering within a relativistic quantum mechanical framework

Cited by 60 publications

References 72 publications

Ab Initio Study of (νℓ,ℓ−) and (ν¯<

Ab Initio Study of (νℓ,ℓ−) and (ν¯<

Non-trivial differences between charged current $ν_e$ and $ν_μ$ induced interactions with nuclei

Semi-inclusive charged-current neutrino-nucleus cross sections in the relativistic plane-wave impulse approximation

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