Large-Angle Charge-Exchange Scattering of Pions by <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">He</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> at 200, 250, 275, and 290 MeV

J. Källne; H. A. Thiessen; C. L. Morris; S. L. Verbeck; M. J. Devereaux; G. R. Burleson; J. S. McCarthy; R. R. Whitney; J. E. Bolger; C. F. Moore; C. A. Goulding

doi:10.1103/PhysRevLett.42.159

Large-Angle Charge-Exchange Scattering of Pions by ${}^{3}{He}$ at 200, 250, 275, and 290 MeV

J. Källne, H. A. Thiessen, C. L. Morris, S. L. Verbeck, M. J. Devereaux, G. R. Burleson, J. S. McCarthy, R. R. Whitney, J. E. Bolger, C. F. Moore, and C. A. Goulding

Phys. Rev. Lett. 42, 159 – Published 15 January 1979

Abstract

Differential cross sections for the reaction ${}^{3}{He}$ ( $π^{-}$ , $π^{0}$ ) ${}^{3}H$ at energies of 200, 250, 275, and 290 MeV over the angular region $80 ° ≲ θ_{c . m .} ≲ 150 °$ are presented. Comparison is made with theoretical predictions based on Glauber theory and optical-potential calculations. Neither approach gives a satisfactory description of the data; in particular, the observed energy dependence is much smaller than the theoretical predictions.

Received 19 September 1978

DOI:https://doi.org/10.1103/PhysRevLett.42.159

Authors & Affiliations

J. Källne^*, H. A. Thiessen, and C. L. Morris

Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545

S. L. Verbeck^†, M. J. Devereaux, and G. R. Burleson

New Mexico State University, Las Cruces, New Mexico 88003

J. S. McCarthy and R. R. Whitney

University of Virginia, Charlottesville, Virginia 22901

J. E. Bolger^‡ and C. F. Moore

University of Texas, Austin, Texas 78712

C. A. Goulding

Florida A & M University, Tallahassee, Florida 32306

^*Present address: Department of Physics, University of Virginia, Charlottesville, Va. 22901.
^†Present address: W. H. B. Chan and Co., Los Angeles, California.
^‡Present address: Schweizerisches Institut für Nuklearforschung, Villigen, Switzerland.