Observation of isobaric analog states in pion single-charge-exchange reactions

Helmut W. Baer*, J. D. Bowman, M. D. Cooper, F. H. Cverna, C. M. Hoffman, Mikkel B. Johnson, N. S.P. King, J. Piffaretti, E. R. Siciliano, J. Alster, A. Doron, S. Gilad, M. Moinester, P. R. Bevington, E. Winkelmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Isobaric-analog-state transitions have been observed throughout the periodic table in the (+, 0) reaction. The forward-angle differential cross sections at T =98 MeV on targets of CH2, Li7, C13, Al27, Ni58, Zr90, Sn120, and Pb208 are reported. The A dependence follows (N-Z)A-43, which is qualitatively understood in terms of a strong-absorption model. Optical-potential calculations which demonstrate the sensitivity to neutron density distributions and to the isospin dependence of higher-order dynamical effects are discussed.

Original languageEnglish
Pages (from-to)982-986
Number of pages5
JournalPhysical Review Letters
Issue number12
StatePublished - 1980


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