Pion-Exchange Effects in Elastic Backward Proton-Deuteron Scattering |
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| Authors: | L. P. Kaptari B. Kämpfer S. M. Dorkin S. S. Semikh |
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| Affiliation: | (1) Research Center Rossendorf, Institute for Nuclear and Hadron Physics, PF 510119, D-01314 Dresden, Germany, DE;(2) Bogoliubov Laboratory of Theoretical Physics, JINR Dubna, P.O. Box 79, Moscow, Russia, RU;(3) Far-Eastern State University, Vladivostok, Russia, RU |
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| Abstract: | The elastic backward proton-deuteron scattering is analyzed within a covariant approach based on the deuteron vertex function obtained by the Bethe-Salpeter equation with realistic meson-exchange interaction. Contributions of the one-nucleon and one-pion exchange mechanisms to the cross section and polarization observables are investigated in explicit form. Results of numerical calculations for the cross section, tensor analyzing power and spin transfers are presented. The one-pion exchange contribution is essential for describing the spin-averaged cross section, while in polarization observables it is found to have a small effect. Received December 22, 1998; revised November 8, 1999; accepted November 10, 1999 |
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