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arXiv · 1410.8613

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

P. Adamson·I. Anghel·A. Aurisano·G. Barr·M. Bishai·A. Blake·G. J. Bock·D. Bogert·S. V. Cao·C. M. Castromonte·S. Childress·J. A. B. Coelho·L. Corwin·D. Cronin-Hennessy·J. K. de Jong·A. V. Devan·N. E. Devenish·M. V. Diwan·C. O. Escobar·J. J. Evans·E. Falk·G. J. Feldman·M. V. Frohne·H. R. Gallagher·R. A. Gomes·M. C. Goodman·P. Gouffon·N. Graf·R. Gran·K. Grzelak·A. Habig·S. R. Hahn·J. Hartnell·R. Hatcher·A. Holin·J. Huang·J. Hylen·G. M. Irwin·Z. Isvan·C. James·D. Jensen·T. Kafka·S. M. S. Kasahara·G. Koizumi·M. Kordosky·A. Kreymer·K. Lang·J. Ling·P. J. Litchfield·P. Lucas·W. A. Mann·M. L. Marshak·N. Mayer·C. McGivern·M. M. Medeiros·R. Mehdiyev·J. R. Meier·M. D. Messier·W. H. Miller·S. R. Mishra·S. Moed Sher·C. D. Moore·L. Mualem·J. Musser·D. Naples·J. K. Nelson·H. B. Newman·R. J. Nichol·J. A. Nowak·J. O Connor·M. Orchanian·R. B. Pahlka·J. Paley·R. B. Patterson·G. Pawloski·A. Perch·M. Pfutzner·S. Phan-Budd·R. K. Plunkett·N. Poonthottathil·X. Qiu·A. Radovic·B. Rebel·C. Rosenfeld·H. A. Rubin·M. C. Sanchez·J. Schneps·A. Schreckenberger·P. Schreiner·R. Sharma·A. Sousa·N. Tagg·R. L. Talaga·J. Thomas·M. A. Thomson·X. Tian·A. Timmons·S. C. Tognini·R. Toner·D. Torretta
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Abstract

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 < E_nu < 8 GeV, with = 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.

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P. Adamson, I. Anghel, A. Aurisano, G. Barr, M. Bishai, A. Blake, G. J. Bock, D. Bogert, S. V. Cao, C. M. Castromonte, S. Childress, J. A. B. Coelho, L. Corwin, D. Cronin-Hennessy, J. K. de Jong, A. V. Devan, N. E. Devenish, M. V. Diwan, C. O. Escobar, J. J. Evans, E. Falk, G. J. Feldman, M. V. Frohne, H. R. Gallagher, R. A. Gomes, M. C. Goodman, P. Gouffon, N. Graf, R. Gran, K. Grzelak, A. Habig, S. R. Hahn, J. Hartnell, R. Hatcher, A. Holin, J. Huang, J. Hylen, G. M. Irwin, Z. Isvan, C. James, D. Jensen, T. Kafka, S. M. S. Kasahara, G. Koizumi, M. Kordosky, A. Kreymer, K. Lang, J. Ling, P. J. Litchfield, P. Lucas, W. A. Mann, M. L. Marshak, N. Mayer, C. McGivern, M. M. Medeiros, R. Mehdiyev, J. R. Meier, M. D. Messier, W. H. Miller, S. R. Mishra, S. Moed Sher, C. D. Moore, L. Mualem, J. Musser, D. Naples, J. K. Nelson, H. B. Newman, R. J. Nichol, J. A. Nowak, J. O Connor, M. Orchanian, R. B. Pahlka, J. Paley, R. B. Patterson, G. Pawloski, A. Perch, M. Pfutzner, S. Phan-Budd, R. K. Plunkett, N. Poonthottathil, X. Qiu, A. Radovic, B. Rebel, C. Rosenfeld, H. A. Rubin, M. C. Sanchez, J. Schneps, A. Schreckenberger, P. Schreiner, R. Sharma, A. Sousa, N. Tagg, R. L. Talaga, J. Thomas, M. A. Thomson, X. Tian, A. Timmons, S. C. Tognini, R. Toner, D. Torretta. 2014-10-31. Study of quasielastic scattering using charged-current nu_mu-iron interactions in the MINOS Near Detector. https://doi.org/10.1103/physrevd.91.012005

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