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DOE OSTI · 3699453

Nucleon axial form factor from elementary target data

Meyer, A. S. [Lawrence Livermore National Laboratory] (ORCID:0000000179378505)·Cai, T. [York University; University of Rochester]·Moore, M. [University of Rochester]·Akhter, S. [Aligarh Muslim University]·Dar, Z. Ahmad [William & Mary; Aligarh Muslim University]·Athar, M. Sajjad [Aligarh Muslim University]·Betancourt, M. [Fermi National Accelerator Laboratory]·Budd, H. [University of Rochester]·Caceres, G. [Centro Brasileiro de Pesquisas Físicas]·Correia, D. S. [Centro Brasileiro de Pesquisas Físicas]·Díaz, G. A. [Fermi National Accelerator Laboratory; University of Rochester]·Felix, J. [Universidad de Guanajuato]·Gago, A. M. [Pontificia Universidad Católica del Perú]·Gallagher, H. [Tufts University]·Gaur, P. K. [Aligarh Muslim University]·Gilligan, S. M. [Oregon State University]·Gran, R. [University of Minnesota–Duluth]·Granados, E. [Universidad de Guanajuato]·Harris, D. A. [York University; Fermi National Accelerator Laboratory]·Hart, A. L. [Queen Mary University of London]·Hill, R. J. [University of Kentucky; Fermi National Accelerator Laboratory]·Kleykamp, J. [University of Rochester]·Klustová, A. [Imperial College London]·Kordosky, M. [William & Mary]·Last, D. [University of Rochester; University of Pennsylvania]·Lozano, A. [Centro Brasileiro de Pesquisas Físicas]·Manly, S. [University of Rochester]·Mann, W. A. [Tufts University]·McFarland, K. S. [University of Rochester]·Moreno, O. [William & Mary; Universidad de Guanajuato]·Nelson, J. K. [William & Mary]·Olivier, A. [University of Notre Dame; University of Rochester]·Paolone, V. [University of Pittsburgh]·Perdue, G. N. [Fermi National Accelerator Laboratory; University of Rochester]·Pernas, C. [William & Mary]·Ramírez, M. A. [University of Pennsylvania; Universidad de Guanajuato]·Ransome, R. D. [The State University of New Jersey]·Ruterbories, D. [University of Rochester]·Schellman, H. [Oregon State University]·Salinas, C. J. Solano [Universidad Nacional Mayor de San Marcos]·Vaughan, N. H. [Oregon State University]·Wascko, M. O. [Oxford University; Imperial College London]·Zazueta, L. [William & Mary]
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Abstract

Precise neutrino-nucleon amplitudes are essential ingredients for predicting neutrino event rates in current and upcoming long-baseline neutrino oscillation experiments. A common neutrino interaction with a low reaction threshold and with most of the energy carried by two final state particles is quasielastic scattering, for which the nucleon axial form factor, 𝐹 𝐴⁡ (𝑄 2 ), is a dominant source of uncertainty. Improvements to the nucleon axial form factor rely on neutrino scattering data with elementary targets to reduce or eliminate the need for nuclear modeling systematics. This work examines constraints on the nucleon axial form factor that can be achieved from datasets of neutrino scattering on deuterium targets, Lattice QCD predictions, and from the recent hydrogen target data from the MINERvA Collaboration. Significant tension is found between hydrogen and deuterium target data, suggesting that extractions from deuterium underestimate both the central value and uncertainty of the form factor. Parametrizations for and uncertainties of the nucleon axial form factor using the 𝑧 expansion are provided.

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FOS: Physical sciencesForm factorsHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)NeutrinosNucleus-neutrino interactions

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Meyer, A. S. [Lawrence Livermore National Laboratory] (ORCID:0000000179378505), Cai, T. [York University; University of Rochester], Moore, M. [University of Rochester], Akhter, S. [Aligarh Muslim University], Dar, Z. Ahmad [William & Mary; Aligarh Muslim University], Athar, M. Sajjad [Aligarh Muslim University], Betancourt, M. [Fermi National Accelerator Laboratory], Budd, H. [University of Rochester], Caceres, G. [Centro Brasileiro de Pesquisas Físicas], Correia, D. S. [Centro Brasileiro de Pesquisas Físicas], Díaz, G. A. [Fermi National Accelerator Laboratory; University of Rochester], Felix, J. [Universidad de Guanajuato], Gago, A. M. [Pontificia Universidad Católica del Perú], Gallagher, H. [Tufts University], Gaur, P. K. [Aligarh Muslim University], Gilligan, S. M. [Oregon State University], Gran, R. [University of Minnesota–Duluth], Granados, E. [Universidad de Guanajuato], Harris, D. A. [York University; Fermi National Accelerator Laboratory], Hart, A. L. [Queen Mary University of London], Hill, R. J. [University of Kentucky; Fermi National Accelerator Laboratory], Kleykamp, J. [University of Rochester], Klustová, A. [Imperial College London], Kordosky, M. [William & Mary], Last, D. [University of Rochester; University of Pennsylvania], Lozano, A. [Centro Brasileiro de Pesquisas Físicas], Manly, S. [University of Rochester], Mann, W. A. [Tufts University], McFarland, K. S. [University of Rochester], Moreno, O. [William & Mary; Universidad de Guanajuato], Nelson, J. K. [William & Mary], Olivier, A. [University of Notre Dame; University of Rochester], Paolone, V. [University of Pittsburgh], Perdue, G. N. [Fermi National Accelerator Laboratory; University of Rochester], Pernas, C. [William & Mary], Ramírez, M. A. [University of Pennsylvania; Universidad de Guanajuato], Ransome, R. D. [The State University of New Jersey], Ruterbories, D. [University of Rochester], Schellman, H. [Oregon State University], Salinas, C. J. Solano [Universidad Nacional Mayor de San Marcos], Vaughan, N. H. [Oregon State University], Wascko, M. O. [Oxford University; Imperial College London], Zazueta, L. [William & Mary]. 2026-09-08. Nucleon axial form factor from elementary target data. https://doi.org/10.1103/ptwr-t73j

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