Abstract
A serious breakdown of the distorted-wave impulse approximation has recently been observed in the proton-knockout reaction He-4(e,e''p)H-3. In the phenomenological description of the data, charge-exchange contributions were included through a coupled-channel calculation. New data obtained in a wide range of kinematical configurations are presented in order to study the anomaly in more detail. Its magnitude and dependence on momentum transfer are well accounted for by a newly presented microscopic description of various interaction effects, including meson-exchange currents and charge-exchange processes.
Original language | English |
---|---|
Pages (from-to) | 409-412 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 66 |
Issue number | 4 |
DOIs | |
Publication status | Published - 28 Jan 1991 |
Externally published | Yes |
Keywords
- INELASTIC ELECTRON-SCATTERING
- REACTION C-12(E,E''P)
- RESPONSE FUNCTIONS
- NUCLEAR-MEDIUM
- ELECTRODISINTEGRATION
- DEPENDENCE