Extraction of R=σL/σT from CCFR νμ-Fe and ν¯μ-Fe Differential Cross Sections

U. K. Yang et al. (CCFR/NuTeV Collaboration)
Phys. Rev. Lett. 87, 251802 – Published 28 November 2001
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Abstract

We report on the extraction of R=σLσT from CCFR νμ-Fe and ν¯μ-Fe differential cross sections. The CCFR differential cross sections do not show the deviations from the QCD expectations that are seen in the CDHSW data at very low and very high x. R as measured in νμ scattering is in agreement with R as measured in muon and electron scattering. All data on R for Q2>1GeV2 are in agreement with a NNLO QCD calculation which uses NNLO parton distribution functions and includes target mass effects. We report on the first measurements of R in the low x and Q2<1GeV2 region (where an anomalous large rise in R for nuclear targets has been observed by the HERMES Collaboration).

  • Received 23 April 2001

DOI:https://doi.org/10.1103/PhysRevLett.87.251802

©2001 American Physical Society

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Vol. 87, Iss. 25 — 17 December 2001

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