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Tensor Polarization in Pion-deuteron Elastic Scattering

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File Size : 26,65 MB

Release : 1983

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The angular dependence of the tensor polarization t20/sup lab/ of recoiling deuterons in .pi.-d elastic scattering was measured as a function of incident pion energy in the range 134 to 256 MeV. No evidence was found for rapid energy or angular dependences in t20/sup lab/. The results agree most favorably with theoretical calculations in which the P11 .pi.-N amplitude has been removed altogether. This agreement is consistent with a small effect of pion absorption on the elastic channel. 14 references.







Measurement of Tensor Polarization in Elastic Electron-Deuteron Scattering at Large Momentum Transfer

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Page : 5 pages

File Size : 31,4 MB

Release : 2000

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Tensor polarization observables (t20, t21 and t22) have been measured in elastic electron-deuteron scattering for six values of momentum transfer between 0.66 and 1.7 (GeV/c) 2. The experiment was performed at the Jefferson Laboratory in Hall C using the electron HMS Spectrometer, a specially designed deuteron magnetic channel and the recoil deuteron polarimeter POLDER. The new data determine to much larger Q 2 the deuteron charge form factors GC and GQ. They are in good agreement with relativistic calculations and disagree with pQCD predictions.