Form-factor dependence of neutrino-nucleus cross sections using microscopic methods.
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| Title: | Form-factor dependence of neutrino-nucleus cross sections using microscopic methods. |
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| Authors: | Simons, D1 (AUTHOR), Steinberg, N2,3 (AUTHOR) nsteinberg@anl.gov, Lovato, A3,4 (AUTHOR), Meurice, Y1 (AUTHOR), Rocco, N2 (AUTHOR), Wagman, M2 (AUTHOR) |
| Source: | Journal of Physics G: Nuclear & Particle Physics. Jun2025, Vol. 52 Issue 6, p1-32. 32p. |
| Subjects: | Lattice quantum chromodynamics, Green's functions, Many-body problem, Particles (Nuclear physics), Parameterization |
| Abstract: | To achieve its design goals, the next generation of neutrino-oscillation accelerator experiments requires percent-level predictions of neutrino-nucleus cross sections supplemented by robust estimates of the theoretical uncertainties involved. The latter arise from both approximations in solving the nuclear many-body problem and in the determination of the single- and few-nucleon quantities taken as input by many-body methods. To gauge the sensitivity of realistic nuclear many body methods to these few-nucleon quantities, we compute flux-averaged double-differential cross sections using the Green's function Monte Carlo and spectral function methods as well as different parameterizations of the nucleon axial form factors based on either deuterium bubble-chamber data or lattice quantum chromodynamics calculations. The cross-section results are compared with available experimental data from the MiniBooNE and T2K collaborations. We also discuss the uncertainties associated with N → Δ transition form factors that enter the two-body current operator. We quantify the relations between neutrino-nucleus cross section and nucleon form factor uncertainties. These relations enable us to determine the form factor precision targets required to achieve a given cross-section precision. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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