Extraction of R=sigma_L/sigma_T from CCFR Neutrino and Antinetrino Differential Cross Sections

Details Extraction of R=sigma_L/sigma_T from CCFR Neutrino and Antinetrino Differential Cross Sections Extraction of R=sigma_L/sigma_T from CCFR Neutrino and Antinetrino Differential Cross Sections

2001-05-22

arxiv.org/abs/hep-ex/0105067v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 1 figure. Presented by Arie Bodek for the CCFR/NuTeV collaboration at DIS2001, Bologna, April 2001 (to be published i

Scientific paper

We report on the extraction of R=sigam_L/sigma_T from CCFR neutrino and antineutrino-Iron differential cross sections. R as measured in neutrno scattering is in agreement with $R$ as measured in muon and electron scattering. All data on R for Q2 > 1 GeV2 are in agreement with a NNLO QCD calculation which uses NNLO PDFs and includes target mass effects. We report on the first measurements of R in the low x and Q2 < 1 GeV2 region (where an anomalous large rise in R for nuclear targets has been observed by the HERMES collaboration).

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