Electromagnetic proton-neutron knockout off 16O : New achievements in theory

Autor:	S. Boffi, Franco Davide Pacati, Carlotta Giusti, M. Schwamb
Rok vydání:	2007
Předmět:	Physics Nuclear and High Energy Physics Nuclear Theory Proton Scattering FOS: Physical sciences Nuclear Theory (nucl-th) Nuclear physics Cross section (physics) Orthogonality Excited state Neutron Tensor Orthogonalization
Zdroj:	The European Physical Journal A. 33:29-38
ISSN:	1434-601X 1434-6001
Popis:	Results for the cross sections of the exclusive 16O(e,e'pn)14N and 16O(gamma,pn)14N knockout reactions are presented and discussed in different kinematics. In comparison with earlier work, a complete treatment of the center-of-mass (CM) effects in the nuclear one-body current is considered in connection with the problem of the lack of orthogonality between initial bound and final scattering states. The effects due to CM and orthogonalization are investigated in combination with different treatments of correlations in the two-nucleon overlap function and for different parametrizations of the two-body currents. The CM effects lead in super-parallel kinematics to a dramatic increase of the 16O(e,e'pn) cross section to the 1_2^+ excited state (3.95 MeV) of 14N. In all the situations considered the results are very sensitive to the treatment of correlations. A crucial role is played by tensor correlations, but also the contribution of long-range correlations is important. 13 pages, 10 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e359d8f4212b5a17651e7f670bc6849 https://doi.org/10.1140/epja/i2007-10418-2 Zobrazit plný text záznamu Plný text ve formátu PDF