Pion-deuteron elastic scattering at large angles from 0.90 to 2.025 GeV/c

doi:10.1016/0375-9474(92)90258-L

Nuclear Physics A

Volume 542, Issue 4, 22 June 1992, Pages 579-586

https://doi.org/10.1016/0375-9474(92)90258-L Get rights and content

Abstract

The differential cross section for the backward (120° ⩽ θ_c.m.s. ⩽ 180°) pion-deuteron elastic scattering was measured at eight incident pion momenta from 0.90 to 2.025 GeV/c. A distinctive change in the shape of the angular distribution is observed. At 0.9 GeV/c the differential cross section decreases smoothly to 180° in accordance with predictions of multiple-scattering theory. At 1.31 GeV/c, i.e. in the region of the hypothetical ¹I₆ dibaryon with a mass of 2.9 GeV, the differential cross section is practically independent of angle. At higher energies a sharp backward peak is clearly seen. Connections of our results with dibaryons and Regge asymptotic behaviour are discussed.

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^★: Present address: Department of Nuclear Physics, University of Lund, Sölvegatan 14, S-223 62 Lund, Sweden.

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Pion-deuteron elastic scattering at large angles from 0.90 to 2.025 GeV/c

Abstract

Phys. Lett.

Nucl. Phys.

Nucl. Phys.

Czech. J. Phys.

Prog. Theor. Phys.

Yad. Fiz.