Nucleon axial-vector form factor and radius from future neutrino experiments

Abstract

Precision measurements of antineutrino elastic scattering on hydrogen from future neutrino experiments offer a unique opportunity to access the low-energy structure of protons and neutrons. We discuss the determination of the nucleon axial-vector form factor and radius from antineutrino interactions on hydrogen that can be collected at the future Long-Baseline Neutrino Facility, and study the sources of theoretical and experimental uncertainties. The projected accuracy would improve existing measurements by $1$ order of magnitude and be competitive with contemporary lattice-QCD determinations, potentially helping to resolve the corresponding tension with measurements from (anti)neutrino elastic scattering on deuterium. We find that the current knowledge of the nucleon vector form factors could be one of the dominant sources of uncertainty. We also evaluate the constraints that can be simultaneously obtained on the absolute ${\bar{\nu }}_{\mu }$ flux normalization.

14 pages, 5 figures, v2: version published in Physical Review D, Equation 9, and Table 1 updated, minor text updates

References in corpus (30)

• High-precision determination of the electric and magnetic form factors of the proton
• Nucleon Electromagnetic Form Factors
• Simulation of QCD with N_f=2+1 flavors of non-perturbatively improved Wilson fermions
• CP Violation and Neutrino Oscillations
• Physics Potential of a Long Baseline Neutrino Oscillation Experiment Using J-PARC Neutrino Beam and Hyper-Kamiokande
• Proton and neutron electromagnetic form factors and uncertainties
• Vector and Axial Nucleon Form Factors:A Duality Constrained Parameterization
• Axial, induced pseudoscalar, and pion-nucleon form factors in manifestly Lorentz-invariant chiral perturbation theory
• Precision Nucleon Charges and Form Factors Using 2+1-flavor Lattice QCD
• Neutrino inclusive inelastic scattering off nuclei
• Inclusive neutrino scattering off deuteron from threshold to GeV energies
• Nucleon axial and pseudoscalar form factors from lattice QCD at the physical point
• Isospin violation in the vector form factors of the nucleon
• Nucleon axial, scalar, and tensor charges using lattice QCD at the physical pion mass
• Electroweak structure of the nucleon, meson cloud and light-cone wavefunctions
• Nuclear parton distributions and the Drell-Yan process
• Nucleon Form Factors of the Isovector Axial-Vector Current: Situation of Experiments and Theory
• QED radiative corrections for accelerator neutrinos
• A Precise Determination of (Anti)neutrino Fluxes with (Anti)neutrino-Hydrogen Interactions
• Nucleon form factors in dispersively improved Chiral Effective Field Theory I: Scalar form factor
• Ordinary muon capture on a proton in manifestly Lorentz invariant baryon chiral perturbation theory
• Form Factors of the Nucleon Axial Current
• Impact of high energy beam tunes on the sensitivities to the standard unknowns at DUNE
• Isospin breaking in the vector current of the nucleon
• Off-shell effects in bound nucleons and parton distributions from ${}^1$H, ${}^2$H, ${}^3$H and ${}^3$He data
• Probing Free Nucleons with (Anti)neutrinos
• Axial-vector form factor of nucleons at finite temperature from the AdS/QCD soft-wall model
• An Oxygen Target for (Anti)neutrinos
• Neutrino Scattering Measurements on Hydrogen and Deuterium: A Snowmass White Paper
• Precision Measurements of Fundamental Interactions with (Anti)Neutrinos