2014/10/31 by P. Adamson, I. M. Anghel, I. Anghel +127 · 74 citations
Mathematics · Physics and Astronomy · #Computational physics #High-Energy Particle Collisions Research #Inelastic neutron scattering #Mathematics #Monte Carlo method #Neutrino Physics Research #Neutron #Neutron scattering #Nuclear physics #Particle physics theoretical and experimental studies #Physics #Quasielastic neutron scattering #Quasielastic scattering #Statistics #hep-ex
paper · pdf · open access · doi:10.1103/physrevd.91.012005
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 91(1) (American Physical Society) · 20 pages, 13 figures, 3 Tables Accepted for publication in PRD
arxiv created 2014/12/28 · openalex publication_date 2015/01/08 · arxiv updated 2015/01/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Kinematic distributions from an inclusive sample of 1.41\ifmmode×\else\texttimes\fi106 charged-current \ensuremathν_\ensuremathμ interactions on iron, obtained using the MINOS near detector exposed to a wide-band beam with peak flux at 3 GeV, are compared to a conventional treatment of neutrino scattering within a Fermi gas nucleus. Results are used to guide the selection of a subsample enriched in quasielastic \ensuremathν_\ensuremathμFe interactions, containing an estimated 123,000 quasielastic events of incident energies 1<E_\ensuremathν<8 GeV, with ⟨E_\ensuremathν⟩=2.79 GeV. Four additional subsamples representing topological and kinematic sideband regions to quasielastic scattering are also selected for the purpose of evaluating backgrounds. Comparisons using subsample distributions in four-momentum transfer Q2 show the Monte Carlo model to be inadequate at low Q2. Its shortcomings are remedied via inclusion of a Q2-dependent suppression function for baryon resonance production, developed from the data. A chi-square fit of the resulting Monte Carlo simulation to the shape of the Q2 distribution for the quasielastic-enriched sample is carried out with the axial-vector mass MA of the dipole axial-vector form factor of the neutron as a free parameter. The effective MA which best describes the data is 1.23_\ensuremath-0.09+0.13(fit)_\ensuremath-0.15+0.12(syst) GeV.