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Study of quasielastic scattering using charged-current ?µ-iron interactions in the MINOS near detector

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posted on 2023-06-09, 07:52 authored by N E Devenish, Elisabeth FalkElisabeth Falk, Jeff HartnellJeff Hartnell, et al The MINOS Collaboration
Kinematic distributions from an inclusive sample of 1.41 × 10^6 charged-current ?µ 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 ?µFe interactions, containing an estimated 123,000 quasielastic events of incident energies 1 < E? < 8 GeV, with hE?i ¼ 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 fourmomentum transfer Q^2 show the Monte Carlo model to be inadequate at low Q^2. Its shortcomings are remedied via inclusion of a Q^2-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+0.13-0.09 (fit)+0.12-0.15 (syst) GeV.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

2470-0010

Publisher

American Physical Society

Issue

1

Volume

91

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-09-08

First Open Access (FOA) Date

2017-09-08

First Compliant Deposit (FCD) Date

2017-09-08

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