Elsevier

Nuclear Physics A

Volume 197, Issue 2, 18 December 1972, Pages 449-484
Nuclear Physics A

Pion- 12C elastic scattering in the (32,32) resonance region

https://doi.org/10.1016/0375-9474(72)91022-6Get rights and content

Abstract

The optical model derived from Watson's multiple scattering theory is applied to the analysis of the π12C elastic scattering around the (32,32) resonance. In this energy range, the validity of the approximations used in the Kisslinger model is dubious and our aim is to avoid them. Thus we make some corrections to the impulse approximation and show that one can separate the nucleon binding effect from the effect of the Pauli principle in the π-nucleon transition matrix in nuclear matter. In the evaluation of the optical potential we use a parametrization of the π-nucleon transition matrix close to the form given by the Chew-Low model. The first-order term is calculated correctly by taking into account Fermi motion and using the correct kinematics, whereas the second-order term is evaluated using the static and closure approximations. The results obtained show that the impulse, static and even the coherent scattering approximations are not justified in this energy range. However there still remains a discrepancy between our results and the experimental ones.

References (11)

  • F. Binon et al.

    Nucl. Phys.

    (1970)
  • G.F. Chew et al.

    Phys. Rev.

    (1956)
  • Gartenhaus-Schwartz

    Phys. Rev.

    (1957)
  • J. GörresE.H. Auerbach et al.

    Phys. Rev. Lett.

    (1970)
    M. Krell et al.

    Nucl. Phys.

    (1970)
    J.P. Maillet et al.

    Lett. Nuovo Cim.

    (1971)
    J.P. Dedonder

    Nucl. Phys.

    (1971)
    f) J. P. Dedonder, preprint IPNO/TH 71-16; Nucl. Phys.,...Bjornenak et al.

    Nucl. Phys.

    (1970)
    C. Schmit

    Lett. Nuovo Cim.

    (1970)
    C. Wilkin

    Lett. Nuovo Cim.

    (1970)
    R. Seki

    Phys. Rev.

    (1971)
    H.K. Lee et al.

    Nucl. Phys.

    (1971)
    A.G. Sitenko et al.

    On the fast π-meson scattering by nuclei

    (1970)
    C. Schmit

    Ph.D. thesis

    (1971)
  • K.M. Watson et al.
There are more references available in the full text version of this article.

Cited by (0)

Laboratoire Associé au CNRS.

View full text