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Type: | Artigo |
Title: | Study of quasielastic scattering using charged-current nu(mu)-iron Interactions In the MINOS near detector |
Author: | Adamson, P. Anghel, I. Aurisano, A. Barr, G. Bishai, M. Blake, A. Bock, G. J. Bogert, D. Cao, S. V. Castromonte, C. M. Childress, S. Coelho, J. A. B. Corwin, L. Cronin-Hennessy, D. de Jong, J. K. Devan, A. V. Devenish, N. E. Diwan, M. V. Escobar, C. O. Evans, J. J. Falk, E. Feldman, G. J. Frohne, M. V. Gallagher, H. R. Gomes, R. A. Goodman, M. C. Gouffon, P. Graf, N. Gran, R. Grzelak, K. Habig, A. Hahn, S. R. Hartnell, J. Hatcher, R. Holin, A. Huang, J. Hylen, J. Irwin, G. M. Isvan, Z. James, C. Jensen, D. Kafka, T. Kasahara, S. M. S. Koizumi, G. Kordosky, M. Kreymer, A. Lang, K. Ling, J. Litchfield, P. J. Lucas, P. Mann, W. A. Marshak, M. L. Mayer, N. McGivern, C. Medeiros, M. M. Mehdiyev, R. Meier, J. R. Messier, M. D. Miller, W. H. Mishra, S. R. Sher, S. M. Moore, C. D. Mualem, L. Musser, J. Naples, D. Nelson, J. K. Newman, H. B. Nichol, R. J. Nowak, J. A. O'Connor, J. Orchanian, M. Pahlka, R. B. Paley, J. Patterson, R. B. Pawloski, G. Perch, A. Pfutzner, M. Phan-Budd, S. Plunkett, R. K. Poonthottathil, N. Qiu, X. Radovic, A. Rebel, B. Rosenfeld, C. Rubin, H. A. Sanchez, M. C. Schneps, J. Schreckenberger, A. Schreiner, P. Sharma, R. Sousa, A. Tagg, N. Talaga, R. L. Thomas, J. Thomson, M. A. Tian, X. Timmons, A. Tognini, S. C. Toner, R. Torretta, D. Urheim, J. Vahle, P. Viren, B. Walding, J. J. Weber, A. Webb, R. C. White, C. Whitehead, L. Whitehead, L. H. Wojcicki, S. G. Zwaska, R. |
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 Fe-mu interactions, containing an estimated 123,000 quasielastic events of incident energies 1 < E-nu < 8 GeV, with < E-nu > = 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(-0.09)(+0.13)(fit)(-0.15)(+0.12)(syst) GeV. 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 Fe-mu interactions, containing an estimated 123,000 quasielastic events of incident energies 1 < E-nu < 8 GeV, with < E-nu > = 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(-0.09)(+0.13)(fit)(-0.15)(+0.12)(syst) GeV. |
Subject: | Interações de neutrinos, Neutrinos, Seção de choque (Física nuclear) |
Country: | Estados Unidos |
Editor: | American Physical Society |
Citation: | Study Of Quasielastic Scattering Using Charged-current Nu(mu)-iron Interactions In The Minos Near Detector. Amer Physical Soc, v. 91, p. Jan-2015. |
Rights: | aberto |
Identifier DOI: | 10.1103/PhysRevD.91.012005 |
Address: | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.012005 |
Date Issue: | 2015 |
Appears in Collections: | IFGW - Artigos e Outros Documentos |
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000349413900003.pdf | 1.26 MB | Adobe PDF | View/Open |
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