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Measurements of Rd-Rp and RCa-Rc in deep inelastic muon scattering
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- Amaudruz, P (author)
- Paul Scherrer Institute, Villigen, Switzerland
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- Lettenström, Frans, 1955- (author)
- Institute for Particle Physics, University of California, Santa Cruz CA, United States
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- Zetsche, F (author)
- Max Planck Institut für Kernphysik, Heidelberg, Germany
- (creator_code:org_t)
- Elsevier, 1992
- 1992
- English.
- In: Physics Letters B. - : Elsevier. - 0370-2693 .- 1873-2445. ; 294:1, s. 120-126
- Journal article (peer-reviewed)
Abstract
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- Results are presented on the difference in R, the ratio of longitudinally to transversely polarised virtual photon absorption cross sections, for the deuteron and the proton. They are obtained by comparing the ratio of cross sections for the deep inelastic scattering of muons from deuterium and hydrogen targets at 90 and 280 GeV incident energy. The results cover the range x = 0.01 -0.30, at an average Q2 of 9 GeV2. The measured difference R(d)-R(p) shows no significant x dependence and is compatible with zero, as well as with expectations from perturbative QCD. We use the same method to obtain the difference R(Ca)-R(C) from cross section ratios measured on carbon and calcium targets at 90 and 200 GeV incident energy.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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