Low-energy neutrino scattering in experiment and astrophysics

Jachowicz, Natalie; Dessel, N. Van; Nikolakopoulos, Alexis

doi:10.1088/1361-6471/ab25d4

Cited by 16 publications

(13 citation statements)

References 75 publications

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“…Although inherently non-relativistic, the calculations are effectively relativized according to the scheme of [37]. The HF-CRPA provides reliable results for very low momentum transfers where long-range correlations, that are not accounted for in a mean-field picture, contribute significantly to the cross section in the form of, e.g., giant resonances [38]. This consistent treatment of the interaction from very low to moderate momentum transfers is important for neutrino-oscillation analyses that need to provide an adequate description of the electroweak interaction with nuclei over a broad region of phase space.…”

Section: Modelsmentioning

confidence: 99%

Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering

et al. 2020

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We show that the quasielastic (QE) response calculated with the SuSAv2 (superscaling approach) model, that relies on the scaling phenomenon observed in the analysis of (e, e ′ ) data and on the relativistic mean-field theory, is very similar to that from a relativistic distorted wave impulse approximation model when only the real part of the optical potentials is employed. The coincidence between the results from these two completely independent approaches, which satisfactorily agree with the inclusive data, reinforces the reliability of the quasielastic predictions stemming from both models and sets constraints for the QE response. We also study the low energy and momentum transfer region of the inclusive response by confronting the results of the relativistic mean-field model with those of the Hartree-Fock continuum random-phase approximation model, which accounts for nuclear long-range correlations. Finally, we present a comparison of our results with the recent JLab (e, e ′ ) data for argon, titanium and carbon, finding good agreement with the three data sets.

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Section: Modelsmentioning

confidence: 99%

Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering

et al. 2020

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“…A number of them are applicable to energies higher than those corresponding to the quasielastic peak, and account for pion production and resonance excitations [32][33][34][35][36]. Others are suitable to model the low-energy region of the response functions characterized by peaks corresponding to collective modes and transitions to discrete excited states [37,38]. However, it is fair to note that they rely on a somewhat approximate description of nuclear dynamics that does not fully capture correlation effects in both the initial and final states and does not generally use as inputs realistic nuclear interactions and consistent electroweak currents.…”

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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“…The v and W factors are representing the lepton kinematic factors and the nuclear responses, the latter encoding the HF-CRPA effects as described in the previous paragraph, expressions for both can be found in Ref. [51]. The combination of the vector-axialvector (V − A) structure of the weak interaction, strong isospin symmetry, and (anti) neutrinos in practice being (positive) negative helicity eigenstates, gives rise to the fact that for reactions off a nucleon, the difference between neutrino and antineutrino induced interactions is simply accounted for by a change of sign of the axial current.…”

Section: Neutrino Versus Antineutrino Induced Interactionsmentioning

confidence: 99%

Nuclear medium effects in neutrino- and antineutrino-nucleus scattering

Jachowicz

Nikolakopoulos

2021

Eur. Phys. J. Spec. Top.

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In this paper we study the influence of nuclear medium effects on quasi-elastic neutrino-nucleus scattering processes. We focus on effects provided by the nuclear mean field and random phase correlations and pay special attention to differences between neutrino-and antineutrino-induced reactions. We confront our results with the T2K and MiniBooNE data for both neutrinos and antineutrinos and the neutrino-antineutrino asymmetry. In view of the recently published ab initio results we provide a careful comparison between our cross section predictions and the ab-initio calculations.

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Low-energy neutrino scattering in experiment and astrophysics

Cited by 16 publications

References 75 publications

Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering

Constraints in modeling the quasielastic response in inclusive lepton-nucleus scattering

Ab Initio Study of (νℓ,ℓ−) and (ν¯<

Nuclear medium effects in neutrino- and antineutrino-nucleus scattering

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