TY - JOUR
T1 - Study of nuclear correlation effects via 12C (over(p, →), over(n, →)) 12N (g.s., 1+) at 296 MeV
AU - Wakasa, T.
AU - Dozono, M.
AU - Ihara, E.
AU - Asaji, S.
AU - Fujita, K.
AU - Hatanaka, K.
AU - Ichimura, M.
AU - Ishida, T.
AU - Kaneda, T.
AU - Matsubara, H.
AU - Nagasue, Y.
AU - Noro, T.
AU - Sakemi, Y.
AU - Shimizu, Y.
AU - Takeda, H.
AU - Tameshige, Y.
AU - Tamii, A.
AU - Yamada, Y.
N1 - Funding Information:
We thank the RCNP cyclotron crew for providing a good quality beam for our experiments. This work was supported in part by the Grants-in-Aid for Scientific Research Nos. 14702005 and 16654064 of the Ministry of Education, Culture, Sports, Science, and Technology of Japan.
PY - 2007/11/15
Y1 - 2007/11/15
N2 - We report measurements of the cross section and a complete set of polarization observables for the Gamow-Teller 12C (over(p, →), over(n, →)) 12N (g.s., 1+) reaction at a bombarding energy of 296 MeV. The data are compared with distorted wave impulse approximation calculations employing transition form factors normalized to reproduce the observed beta-decay ft value. The cross section is significantly under-predicted by the calculations at momentum transfers q ≳ 0.5 fm-1. The discrepancy is partly resolved by considering the non-locality of the nuclear mean field. However, the calculations still under-predict the cross section at large momentum transfers of q ≃ 1.6 fm-1. We also performed calculations employing random phase approximation response functions and found that the observed enhancement can be attributed in part to pionic correlations in nuclei.
AB - We report measurements of the cross section and a complete set of polarization observables for the Gamow-Teller 12C (over(p, →), over(n, →)) 12N (g.s., 1+) reaction at a bombarding energy of 296 MeV. The data are compared with distorted wave impulse approximation calculations employing transition form factors normalized to reproduce the observed beta-decay ft value. The cross section is significantly under-predicted by the calculations at momentum transfers q ≳ 0.5 fm-1. The discrepancy is partly resolved by considering the non-locality of the nuclear mean field. However, the calculations still under-predict the cross section at large momentum transfers of q ≃ 1.6 fm-1. We also performed calculations employing random phase approximation response functions and found that the observed enhancement can be attributed in part to pionic correlations in nuclei.
KW - Gamow-Teller 1 state
KW - Nuclear correlation
KW - Polarization transfer measurement
UR - https://www.scopus.com/pages/publications/35548963328
UR - https://www.scopus.com/pages/publications/35548963328#tab=citedBy
U2 - 10.1016/j.physletb.2007.10.017
DO - 10.1016/j.physletb.2007.10.017
M3 - Article
AN - SCOPUS:35548963328
SN - 0370-2693
VL - 656
SP - 38
EP - 44
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-3
ER -