Glauber isovector spin responses for ({ital {rvec p}},{ital {rvec n}}) reactions at 494 MeV
Journal Article
·
· Physical Review Letters
- Istituto Nazionale di Fisica Nucleare, Sezione di Torino, via Giuria 1, I-10125 Torino (Italy)
The separated isovector spin-longitudinal and spin-transverse responses from a recent ({ital {rvec p}},{ital {rvec n}}) quasifree experiment at 494 MeV are analyzed in a Glauber theory framework up to two-step contributions. Nuclear correlations are treated in the continuum random phase approximation, accounting for the spreading width of the particle-hole states. A good description of the spin-longitudinal response is achieved, hinting at some evidence of pionic effects in the quasielastic region. The spin-transverse response is underestimated, and we show that multistep contributions, while sizable, are not sufficient to provide an explanation of the discrepancy.
- OSTI ID:
- 76551
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 1 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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