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

doi:10.1103/PhysRevLett.45.982

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

School of Physics and Astronomy

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Abstract

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 language	English
Pages (from-to)	982-986
Number of pages	5
Journal	Physical Review Letters
Volume	45
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.45.982
State	Published - 1980

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Baer, H. W., Bowman, J. D., Cooper, M. D., Cverna, F. H., Hoffman, C. M., Johnson, M. B., King, N. S. P., Piffaretti, J., Siciliano, E. R., Alster, J., Doron, A., Gilad, S., Moinester, M., Bevington, P. R., & Winkelmann, E. (1980). Observation of isobaric analog states in pion single-charge-exchange reactions. Physical Review Letters, 45(12), 982-986. https://doi.org/10.1103/PhysRevLett.45.982

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title = "Observation of isobaric analog states in pion single-charge-exchange reactions",

abstract = "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.",

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

year = "1980",

doi = "10.1103/PhysRevLett.45.982",

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volume = "45",

pages = "982--986",

journal = "Physical Review Letters",

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Baer, HW, Bowman, JD, Cooper, MD, Cverna, FH, Hoffman, CM, Johnson, MB, King, NSP, Piffaretti, J, Siciliano, ER, Alster, J, Doron, A, Gilad, S, Moinester, M, Bevington, PR & Winkelmann, E 1980, 'Observation of isobaric analog states in pion single-charge-exchange reactions', Physical Review Letters, vol. 45, no. 12, pp. 982-986. https://doi.org/10.1103/PhysRevLett.45.982

TY - JOUR

T1 - Observation of isobaric analog states in pion single-charge-exchange reactions

AU - Baer, Helmut W.

AU - Bowman, J. D.

AU - Cooper, M. D.

AU - Cverna, F. H.

AU - Hoffman, C. M.

AU - Johnson, Mikkel B.

AU - King, N. S.P.

AU - Piffaretti, J.

AU - Siciliano, E. R.

AU - Alster, J.

AU - Doron, A.

AU - Gilad, S.

AU - Moinester, M.

AU - Bevington, P. R.

AU - Winkelmann, E.

PY - 1980

Y1 - 1980

N2 - 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.

AB - 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.

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SN - 0031-9007

VL - 45

SP - 982

EP - 986

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

ER -

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

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