Isospin Effects in Pion Single-Charge-Exchange Reactions

D. Ashery; D. F. Geesaman; R. J. Holt; H. E. Jackson; J. R. Specht; K. E. Stephenson; R. E. Segel; P. Zupranski; H. W. Baer; J. D. Bowman; M. D. Cooper; M. Leitch; A. Erel; R. Chefetz; J. Comuzzi; R. P. Redwine; D. R. Tieger

doi:10.1103/PhysRevLett.50.482

Isospin Effects in Pion Single-Charge-Exchange Reactions

D. Ashery, D. F. Geesaman, R. J. Holt, H. E. Jackson, J. R. Specht, K. E. Stephenson, R. E. Segel, P. Zupranski, H. W. Baer, J. D. Bowman, M. D. Cooper, M. Leitch, A. Erel, R. Chefetz, J. Comuzzi, R. P. Redwine, and D. R. Tieger

Phys. Rev. Lett. 50, 482 – Published 14 February 1983

Abstract

The ( $π^{\pm}, π^{0}$ ) reactions were studied on targets of ${}^{12}C$ , ${}^{14}C$ , ${}^{16}O$ , and ${}^{18}O$ at 160 MeV by measuring the energy spectra of the neutral pions at several laboratory angles between 6° and 160°. The shapes of the energy spectra, the angular distributions, and the ratios of cross sections for isotopic pairs are used to infer the isospin dependence of the $Δ$ -nucleus interaction.

Received 24 November 1982

DOI:https://doi.org/10.1103/PhysRevLett.50.482

Authors & Affiliations

D. Ashery^*, D. F. Geesaman, R. J. Holt, H. E. Jackson, J. R. Specht, and K. E. Stephenson

Argonne National Laboratory, Argonne, Illinois 60439

R. E. Segel and P. Zupranski^†

Northwestern University, Evanston, Illinois 60201

H. W. Baer, J. D. Bowman, M. D. Cooper, and M. Leitch^‡

Los Alamos National Laboratory, Los Alamos, New Mexico 87545

A. Erel and R. Chefetz

Department of Physics and Astronomy, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel

J. Comuzzi and R. P. Redwine

Physics Department, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

D. R. Tieger

Physics Department, Boston University, Boston, Massachusetts 02215

^*Permanent address: Physics Department, Tel Aviv University, Ramat Aviv, Tel Aviv, Israel.
^†Permanent address: Institute for Nuclear Research, Warsaw, Poland.
^‡Present address: University of British Columbia, Vancouver, British Columbia, Canada.