Forward antiprodon-deuteron elastic scattering and total spin-dependent  antiproton-deuteron cross sections at intermediate energies

Uzikov, Yu. N.; Haidenbauer, J.

doi:10.1103/PhysRevC.79.024617

Journal Article

Forward antiprodon-deuteron elastic scattering and total spin-dependent antiproton-deuteron cross sections at intermediate energies

Uzikov, Y. N. ; Haidenbauer, J.FZJ*

2009
Inst. Woodbury, NY

Physical review / C 79(2), 024617 (2009) [10.1103/PhysRevC.79.024617]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10443 doi:10.1103/PhysRevC.79.024617

Abstract: Spin-dependent total ($) over bar pd cross sections are considered using the optical theorem. For this aim the full spin dependence of the forward ($) over bar pd elastic scattering amplitude is considered in a model independent way. The single-scattering approximation is used to relate this amplitude to the elementary amplitudes of ($) over bar pp and ($) over bar pn scattering and the deuteron form factor. A formalism allowing to take into account Coulomb-nuclear interference effects in polarized ($) over bar pd cross sections is developed. Numerical calculations for the polarized total ($) over bar pd cross sections are performed at beam energies 20-300 MeV using the ($) over bar NN interaction models developed by the Julich group. Double-scattering effects are estimated within the Glauber approach and found to be in the order of 10-20%. Existing experimental data on differential ($) over bar pd cross sections are in good agreement with the performed Glauber calculations. It is found that for the used ($) over bar NN models the total longitudinal and transversal ($) over bar pd cross sections are comparable in absolute value to those for ($) over bar pd scattering.

Keyword(s): anti-p deuteron: elastic scattering ; differential cross section ; spin dependence ; deuteron: form factor ; Glauber ; scattering amplitude: forward scattering ; optical theorem ; impulse approximation ; interference: Coulomb ; nucleon antinucleon: potential

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Note: We acknowledge stimulating discussions with N. N. Nikolaev and F. Rathmann. Furthermore, we are thankful to A. I. Milstein, V. M. Strakhovenko, and H. Stroher for reading the manuscript and useful remarks. This work was supported in part by the Heisenberg-Landau program.

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