Study of quasielastic scattering using charged-current nu_mu-iron interactions in the MINOS Near Detector

Adamson, P. and Anghel, I. and Aurisano, A. and Barr, G. and Bishai, M. and Blake, A. and Bock, G. J. and Bogert, D. and Cao, S. V. and Castromonte, C. M. and Childress, S. and Coelho, J. A. B. and Corwin, L. and Cronin-Hennessy, D. and Jong, J. K. de and Devan, A. V. and Devenish, N. E. and Diwan, M. V. and Escobar, C. O. and Evans, J. J. and Falk, E. and Feldman, G. J. and Frohne, M. V. and Gallagher, H. R. and Gomes, R. A. and Goodman, M. C. and Gouffon, P. and Graf, N. and Gran, R. and Grzelak, K. and Habig, A. and Hahn, S. R. and Hartnell, J. and Hatcher, R. and Holin, A. and Huang, J. and Hylen, J. and Irwin, G. M. and Isvan, Z. and James, C. and Jensen, D. and Kafka, T. and Kasahara, S. M. S. and Koizumi, G. and Kordosky, M. and Kreymer, A. and Lang, K. and Ling, J. and Litchfield, P. J. and Nowak, J. A. (2015) Study of quasielastic scattering using charged-current nu_mu-iron interactions in the MINOS Near Detector. Physical Review D, 91 (1). ISSN 1550-7998

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Kinematic distributions from an inclusive sample of 1.41 x 10^6 charged-current nu_mu 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 nu_mu Fe interactions, containing an estimated 123,000 quasielastic events of incident energies 1 = 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 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 Q^2 distribution for the quasielastic-enriched sample is carried out with the axial-vector mass M_A of the dipole axial-vector form factor of the neutron as a free parameter. The effective M_A which best describes the data is 1.23 +0.13/-0.09 (fit) +0.12/-0.15 (syst.) GeV.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
Additional Information:
© 2015 American Physical Society 20 pages, 13 figures, 3 Tables Accepted for publication in PRD
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Deposited On:
18 Jun 2015 05:37
Last Modified:
10 Apr 2020 02:22