Experimental Test of One-Pion Exchange and PCAC in Proton-Nucleus Charge Exchange Reactions at 144 MeV
The inelastic excitation of nuclei by intermediate energy nucleons is a topic of long standing experimental and theoretical interest. At intermediate energy it has been argued, the inelastic scattering amplitudes should bear some more or less transparent relation to the free nucleon-nucleon scattering amplitudes. Although this relation would be difficult to apply to an arbitrary complex final state, at the very least the relation should be evident in a judiciously chosen set of discrete final states. Not only has the latest generation of accelerators and experimental techniques fostered a renewed interest in this problem, but the nucleon-nucleon amplitudes themselves are now rather well determined.
KeywordsDifferential Cross Section Beta Decay Vertex Function Final State Interaction Pion Exchange
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- 3.0. N. Jarvis, C. Whitehead, and M. Shah, Nucl. Phys. A 184, 615 (1974).Google Scholar
- 4.K. Gottfried and J. D. Jackson, N. Cim. 34, 5783 (1964) L. Durand and Y. T. Chiu, Phys. Rev. 139, 646 (1965).Google Scholar
- 6.G. Fox, CALT-68-335.Google Scholar
- 12.Our equation is obtained by combining the nuclear PCAC relation, Ref. 11, Eq. 6, with the impulse approximation for the pseudo-scalar form factor, Ref. 10, Eq. 56, and Ref. lib, Eq. 16, with the q2 dependence of the axial vector matrix element, Ref. 10, Eq. 59 and 60.Google Scholar
- 13.Ref. 10, Eq. 8. The numerical constants have been chosen such that gpπn(-M2π) = 1.43 and gprn(0) = 1. 32.Google Scholar
- 14.B. Goulard, B. Lararo, H. Primakoff, and J. D. Vergados, Phys. Rev. C16, 1999 (1977).Google Scholar