New evaluation of axial nucleon form factor from electron- and neutrino-scattering data and impact on neutrino-nucleus cross-section

Abstract

A joint fit to neutrino-nucleon scattering and pion electroproduction data is performed to evaluate the nucleon axial form factor in the two-component model consisting of a three-quark intrinsic structure surrounded by a meson cloud. Further constrains on the model are obtained by re-evaluating the electromagnetic form factor using electron scattering data. The results of the axial form factor show sizable differences with respect to the widely used dipole model. The impact of such changes on the Charged-Current Quasi-Elastic neutrino-nucleus cross-section is evaluated in the SuSAv2 nuclear model, based on the Relativistic Mean Field and including the contribution of two-body currents. How the different parametrizations of the axial form factor affect the cross-section prediction is assessed in full details and comparisons to recent T2K and MINERvA data are presented.

19 pages, 12 figures

References in corpus (17)

• High-precision determination of the electric and magnetic form factors of the proton
• First Measurement of the Muon Neutrino Charged Current Quasielastic Double Differential Cross Section
• First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA
• Weak Pion Production off the Nucleon
• Vector and Axial Nucleon Form Factors:A Duality Constrained Parameterization
• Measurements of the Electric Form Factor of the Neutron up to Q2=3.4 GeV2 using the Reaction He3(e,e'n)pp
• Charged-current neutrino-nucleus reactions within the SuSAv2-MEC approach
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• The Charge Form Factor of the Neutron at Low Momentum Transfer from the ${}^2\vec{\mathrm{H}}(\vec{\mathrm{e}},{\mathrm{e}}^{\prime }\mathrm{n})\mathrm{p}$ Reaction
• Extraction of the Neutron Magnetic Form Factor from Quasi-Elastic 3He(pol)(e(pol),e') at Q^2 = 0.1 - 0.6 (GeV/c)^2
• Using world charged pion--nucleus scattering data to constrain an intranuclear cascade model
• Emission of neutron-proton and proton-proton pairs in neutrino scattering
• Two-component model for the axial form factor of the nucleon

Cited by in corpus (9)

• Electroweak axial structure functions and improved extraction of the $V_{ud}$ CKM matrix element
• Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K
• A new method for an improved anti-neutrino energy reconstruction with charged-current interactions in next-generation detectors
• LSND Constraints on the Higgs Portal
• Study of final-state interactions of protons in neutrino-nucleus scattering with INCL and NuWro cascade models
• Spin asymmetries in quasielastic charged current neutrino-nucleon scattering
• Neutrino-Nucleus scattering in the SuSA model
• Multipole Expansion for the Electron-Nucleus Scattering at High Energies in the Unified Electroweak Theory
• Theory of QED radiative corrections to neutrino scattering at accelerator energies