Systematics of the double isobaric analog state cross section at 50 MeV

H. Ward; J. M. Applegate; N. Auerbach; J. Beck; J. Johnson; K. Koch; C. Fred Moore; S. Mordechai; C. L. Morris; J. M. O’Donnell; M. Rawool-Sullivan; B. G. Ritchie; D. L. Watson; C. Whitley

doi:10.1103/PhysRevC.47.687

Systematics of the double isobaric analog state cross section at 50 MeV

H. Ward, J. M. Applegate, N. Auerbach, J. Beck, J. Johnson, K. Koch, C. Fred Moore, S. Mordechai, C. L. Morris, J. M. O’Donnell, M. Rawool-Sullivan, B. G. Ritchie, D. L. Watson, and C. Whitley

Phys. Rev. C 47, 687 – Published 1 February 1993

Abstract

Double charge exchange cross sections for 50 MeV pions to double isobaric analog states in ${}^{44}{Ca}$ , ${}^{56}{Fe}$ , and ${}^{93}{Nb}$ were measured. The results indicate that the effective double charge exchange operator at this energy has a strong short-range component. In addition, evidence is presented tending to implicate isospin mixing as the mechanism for excitation of the analog of the antianalog in ${}^{93}{Nb}$ .

Received 5 October 1992

DOI:https://doi.org/10.1103/PhysRevC.47.687

Authors & Affiliations

H. Ward, J. M. Applegate, N. Auerbach, J. Beck, J. Johnson, K. Koch, C. Fred Moore, S. Mordechai, C. L. Morris, J. M. O’Donnell, M. Rawool-Sullivan, B. G. Ritchie, D. L. Watson, and C. Whitley

Arizona State University, Tempe, Arizona 85287
Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
New Mexico State University, Las Cruces, New Mexico 88003
Tel-Aviv University, Tel-Aviv 69978, Israel
University of Texas at Austin, Austin, Texas 78712
University of York, York YO1 5DD, United Kingdom

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Vol. 47, Iss. 2 — February 1993

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