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Phys. Rev. C 48, 1428–1430 (1993)

Pion double charge exchange on 16O at Tπ=300–500 MeV

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D. P. Beatty
Department of Physics, Rutgers University, Piscataway, New Jersey, 08855

G. R. Burleson, M. Rawool-Sullivan, and M. El-Ghossain
New Mexico State University, Las Cruces, New Mexico 88003

H. T. Fortune, A. L. Williams, and D. A. Smith
University of Pennsylvania, Philadelphia, Pennsylvania 19104

C. L. Morris and R. Garnett
Los Alamos National Laboratory, Los Alamos, New Mexico 87545

D. L. Watson
University of York, York Y01 5DD, North Yorkshire, United Kingdom

J. Johnson, H. Ward, and C. Whitley
University of Texas, Austin, Texas 78712

S. K. Matthews
George Washington University, Washington, D.C. 20052

M. Palarczyk, C. Edwards, and M. Espy
University of Minnesota, Minneapolis, Minnesota 55455

O. Hashimoto and H. Tomoyuki
KEK, National Laboratory for High Energy Physics, Tsukuba, Ibaraki 305, Japan

Received 27 April 1993; published in the issue dated September 1993

Measurements of small-angle cross sections for the pion double-charge-exchange (DCX) reaction 16O(π+,π-)16Ne (g.s.) at incident energies of 300–500 MeV are reported. These are the first measurements of DCX cross sections on a T=0 nucleus in this energy region. The behavior of the cross sections is similar to that of analog transitions, but they are smaller by more than an order of magnitude. This suggests sequential charge-exchange scattering as the dominant process, but suppressed by a mechanism not yet identified.

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.48.1428
DOI:
10.1103/PhysRevC.48.1428
PACS:
25.80.Gn, 27.20.+n
 
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