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25 April 2024

» arxiv » hep-ex/0105067

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Extraction of R=sigma_L/sigma_T from CCFR Neutrino and Antinetrino Differential Cross Sections
A. Bodek ; T. Adams ; A. Alton ; C. G. Arroyo ; S. Avvakumov ; L. deBarbaro ; P. deBarbaro ; A.O. Bazarko ; R. H.Bernstein ; T. Bolton ; J. Brau ; D. Buchholz ; et. al ;
Date:	22 May 2001
Subject:	hep-ex
Abstract:	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).
Source:	arXiv, hep-ex/0105067
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