New Measurements of Nucleon Structure Functions from CCFR/NuTeV
A. Bodek, U. K. Yang, T. Adams, A. Alton, C. G. Arroyo, S. Avvakumov,, L. de Barbaro, P. de Barbaro, A. O. Bazarko, R. H. Bernstein, T. Bolton, J., Brau, D. Buchholz, H. Budd, L. Bugel, J. Conrad, R. B. Drucker, B. T., Fleming, J. A. Formaggio, R. Frey, J. Goldman, M. Goncharov
TL;DR
This paper presents new, model-independent measurements of nucleon structure functions F_2 and Delta xF_3 from neutrino and antineutrino scattering, providing insights into heavy charm production and resolving previous measurement discrepancies.
Contribution
First model-independent extraction of Delta xF_3, testing heavy charm production models, and resolving discrepancies in F_2 measurements between neutrino and muon scattering.
Findings
Delta xF_3 exceeds current theoretical predictions.
F_2 measurements agree with NLO PDFs within 5%.
Results support massive charm production schemes.
Abstract
We report on the extraction of the structure functions F_2 and Delta xF_3 = xF_3nu-xF_3nub from CCFR neutrino-Fe and antineutrino-Fe differential cross sections. The extraction is performed in a physics model independent (PMI) way. This first measurement for Delta xF_3, which is useful in testing models of heavy charm production, is higher than current theoretical predictions. Within 5% the F_2 (PMI) values measured in neutrino and muon scattering are in agreement with the predictions of Next-to-Leading-Order PDFs (using massive charm production schemes), thus resolving the long-standing discrepancy between the two measurements.
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