Spin effects in π-nucleus scattering in the region of the Δ(3,3) resonance

R. Tacik, E. T. Boschitz, R. Meier, S. Ritt, M. Wessler, K. Junker, J. A. Konter, S. Mango, D. Renker, B. van den Brandt, W. Meyer, W. Thiel, P. Chaumette, J. Deregel, G. Durand, J. Fabre, P. Amaudruz, R. R. Johnson, G. Smith, P. Weber, and R. Mach
Phys. Rev. Lett. 63, 1784 – Published 23 October 1989
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Abstract

We present the first measurements of spin effects in π+ elastic and inelastic scattering from complex nuclei, 15N→((1/2) and 6Li→(1+). For the case of 15N, the analyzing power Ay was measured at Tπ=164 MeV between 60° and 100°. Although large values of Ay are predicted by theory, the data are consistent with zero. For the case of 6Li, the analyzing power iT11 was measured at Tπ=134 and 164 MeV, between 50° and 110°. Large values of iT11 were found at some angles, but the measured angular distributions differ considerably from theoretical predictions.

  • Received 5 July 1989

DOI:https://doi.org/10.1103/PhysRevLett.63.1784

©1989 American Physical Society

Authors & Affiliations

R. Tacik, E. T. Boschitz, R. Meier, S. Ritt, and M. Wessler

  • University of Karlsruhe, D-7500 Karlsruhe, Federal Republic of Germany

K. Junker, J. A. Konter, S. Mango, D. Renker, and B. van den Brandt

  • Paul Scherrer Institute, CH-5234 Villigen PSI, Switzerland

W. Meyer and W. Thiel

  • University of Bonn, D-5300 Bonn, Federal Republic of Germany

P. Chaumette, J. Deregel, G. Durand, and J. Fabre

  • Departement de Physique de Particules Élémentaires, Centre d’Etudes Nucléaires de Saclay, 91191 Gif-sur-Yvette CEDEX, France

P. Amaudruz, R. R. Johnson, G. Smith, and P. Weber

  • TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada

R. Mach

  • Institute of Nuclear Physics, Czechoslovak Academy of Sciences, CS 25068 R̆ez̆, Czechoslovakia

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Issue

Vol. 63, Iss. 17 — 23 October 1989

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