Abstract
A complete set of polarization transfer coefficients has been measured for quasielastic [Formula Presented] reactions on [Formula Presented] [Formula Presented] and [Formula Presented] at a bombarding energy of 346 MeV and a laboratory scattering angle of [Formula Presented] The spin-longitudinal [Formula Presented] and spin-transverse [Formula Presented] response functions are extracted within a framework of a plane-wave impulse approximation with eikonal and optimal factorization approximations. The theoretically expected enhancement of [Formula Presented] is not observed. The observed [Formula Presented] is consistent with the pionic enhanced [Formula Presented] expected by random-phase approximation (RPA) calculations. On the contrary, a large excess of the observed [Formula Presented] is found in comparison with [Formula Presented] of the quasielastic electron scattering as well as of RPA calculations. This excess masks the effect of pionic correlations in [Formula Presented] The theoretical calculations are performed in a distorted-wave impulse approximation with RPA correlations, which indicates that the nuclear absorption effect depends on the spin direction. This spin-direction dependence is responsible in part for the excess of [Formula Presented]
| Original language | English |
|---|---|
| Pages (from-to) | 3177-3195 |
| Number of pages | 19 |
| Journal | Physical Review C - Nuclear Physics |
| Volume | 59 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jan 1 1999 |
| Externally published | Yes |
Fingerprint
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
Cite this
Polarization transfer and spin response functions in quasielastic [Formula Presented] reactions at 346 MeV. / Wakasa, Tomotsugu; Sakai, H.; Hatanaka, K.; Okamura, H.; Otsu, H.; Fujita, S.; Nonaka, T.; Uesaka, T.; Satou, Y.; Ohnishi, T.; Yokoyama, G.; Ishida, S.; Sakamoto, N.; Greenfield, M. B.; Ichimura, M.; Kawahigashi, K.
In: Physical Review C - Nuclear Physics, Vol. 59, No. 6, 01.01.1999, p. 3177-3195.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Polarization transfer and spin response functions in quasielastic [Formula Presented] reactions at 346 MeV
AU - Wakasa, Tomotsugu
AU - Sakai, H.
AU - Hatanaka, K.
AU - Okamura, H.
AU - Otsu, H.
AU - Fujita, S.
AU - Nonaka, T.
AU - Uesaka, T.
AU - Satou, Y.
AU - Ohnishi, T.
AU - Yokoyama, G.
AU - Ishida, S.
AU - Sakamoto, N.
AU - Greenfield, M. B.
AU - Ichimura, M.
AU - Kawahigashi, K.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - A complete set of polarization transfer coefficients has been measured for quasielastic [Formula Presented] reactions on [Formula Presented] [Formula Presented] and [Formula Presented] at a bombarding energy of 346 MeV and a laboratory scattering angle of [Formula Presented] The spin-longitudinal [Formula Presented] and spin-transverse [Formula Presented] response functions are extracted within a framework of a plane-wave impulse approximation with eikonal and optimal factorization approximations. The theoretically expected enhancement of [Formula Presented] is not observed. The observed [Formula Presented] is consistent with the pionic enhanced [Formula Presented] expected by random-phase approximation (RPA) calculations. On the contrary, a large excess of the observed [Formula Presented] is found in comparison with [Formula Presented] of the quasielastic electron scattering as well as of RPA calculations. This excess masks the effect of pionic correlations in [Formula Presented] The theoretical calculations are performed in a distorted-wave impulse approximation with RPA correlations, which indicates that the nuclear absorption effect depends on the spin direction. This spin-direction dependence is responsible in part for the excess of [Formula Presented]
AB - A complete set of polarization transfer coefficients has been measured for quasielastic [Formula Presented] reactions on [Formula Presented] [Formula Presented] and [Formula Presented] at a bombarding energy of 346 MeV and a laboratory scattering angle of [Formula Presented] The spin-longitudinal [Formula Presented] and spin-transverse [Formula Presented] response functions are extracted within a framework of a plane-wave impulse approximation with eikonal and optimal factorization approximations. The theoretically expected enhancement of [Formula Presented] is not observed. The observed [Formula Presented] is consistent with the pionic enhanced [Formula Presented] expected by random-phase approximation (RPA) calculations. On the contrary, a large excess of the observed [Formula Presented] is found in comparison with [Formula Presented] of the quasielastic electron scattering as well as of RPA calculations. This excess masks the effect of pionic correlations in [Formula Presented] The theoretical calculations are performed in a distorted-wave impulse approximation with RPA correlations, which indicates that the nuclear absorption effect depends on the spin direction. This spin-direction dependence is responsible in part for the excess of [Formula Presented]
UR - http://www.scopus.com/inward/record.url?scp=17144436399&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=17144436399&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.59.3177
DO - 10.1103/PhysRevC.59.3177
M3 - Article
VL - 59
SP - 3177
EP - 3195
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
SN - 0556-2813
IS - 6
ER -