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

Journal Article · Mon Sep 22 04:00:00 EDT 1980 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.45.982· OSTI ID:6803911

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

Isobaric-analog-state transitions have been observed throughout the periodic table in the (..pi../sup +/,..pi../sup 0/) reaction. The forward-angle differential cross sections at T/sub ..pi../=98 MeV on targets of CH/sub 2/, /sup 7/Li, /sup 13/C, /sup 27/Al, /sup 58/Ni, /sup 90/Zr, /sup 120/Sn, and /sup 208/Pb are reported. The A dependence follows (N-Z)A/sup -4/3/, 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.

• Research Organization: Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 6803911
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 45:12; ISSN PRLTA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27 TARGET
BOSONS
CARBON 13 TARGET
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EXPERIMENTAL DATA
HADRON REACTIONS
HADRONS
INFORMATION
ISOBARIC ANALOGS
ISOSPIN
LEAD 208 TARGET
LINEAR ABSORPTION MODELS
LITHIUM 7 TARGET
MATHEMATICAL MODELS
MESON REACTIONS
MESONS
MEV RANGE
MEV RANGE 10-100
NICKEL 58 TARGET
NUCLEAR REACTIONS
NUMERICAL DATA
OPTICAL MODELS
PARTICLE MODELS
PARTICLE PROPERTIES
PION PLUS REACTIONS
PION REACTIONS
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
TARGETS
TIN 120 TARGET
ZIRCONIUM 90 TARGET