Polarization transfer measurements for C12(p→,n→)N12(g.s.,1+) at 296 MeV and nuclear correlation effects

M. Dozono, T. Wakasa, E. Ihara, S. Asaji, K. Fujita, K. Hatanaka, M. Ichimura, T. Ishida, T. Kaneda, H. Matsubara, Y. Nagasue, T. Noro, Y. Sakemi, Y. Shimizu, H. Takeda, Y. Tameshige, A. Tamii, Y. Yamada

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Abstract

Differential cross sections and complete sets of polarization observables are presented for the Gamow-Teller C12(p→,n→)N12(g.s.,1+) reaction at a bombarding energy of 296 MeV with momentum transfers q of 0.1 to 2.2 fm-1. The polarization transfer observables are used to deduce the spin-longitudinal cross section, IDq, and spin-transverse cross sections, IDp and IDn. The data are compared with calculations based on the distorted-wave impulse approximation (DWIA) using shell-model wave functions. Significant differences between the experimental and theoretical results are observed for all three spin-dependent IDi at momentum transfers of q O. 5 -1, suggesting the existence of nuclear correlations beyond the shell model. We also performed DWIA calculations employing random-phase approximation (RPA) response functions and found that the observed discrepancy is partly resolved by the pionic and -mesonic correlation effects.

Original languageEnglish
Article number024319
JournalPhysical Review C - Nuclear Physics
Volume80
Issue number2
DOIs
Publication statusPublished - Aug 31 2009

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Dozono, M., Wakasa, T., Ihara, E., Asaji, S., Fujita, K., Hatanaka, K., Ichimura, M., Ishida, T., Kaneda, T., Matsubara, H., Nagasue, Y., Noro, T., Sakemi, Y., Shimizu, Y., Takeda, H., Tameshige, Y., Tamii, A., & Yamada, Y. (2009). Polarization transfer measurements for C12(p→,n→)N12(g.s.,1+) at 296 MeV and nuclear correlation effects. Physical Review C - Nuclear Physics, 80(2), [024319]. https://doi.org/10.1103/PhysRevC.80.024319