Abstract
High-momentum components of proton momentum distributions in have been studied from 300 to 500 MeV/c with the () reaction. Cross sections were measured with 180 keV excitation-energy resolution for transitions to the low-lying , , , , and states in . The data are compared to distorted-wave impulse-approximation calculations with mean-field wave functions and with wave functions that include nucleon-nucleon correlations. The data are substantially larger than mean-field predictions. The observed excess strength at low excitation energy appears to be mainly due to long-range correlations and not to short-range and tensor correlations.
- Received 19 July 1994
DOI:https://doi.org/10.1103/PhysRevLett.73.2684
©1994 American Physical Society