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Singlet-to-triplet ratio in the deuteron breakup reaction $pd o pnp$ at 585 MeV | | Yu. N. Uzikov
; V.I. Komarov
; F. Rathmann
; H. Seyfarth
; | | Date: |
16 Oct 2001 | | Journal: | Phys.Lett. B524 (2002) 303-307 | | Subject: | nucl-th | | Affiliation: | JINR, Dubna, Russia), V.I. Komarov (JINR, Dubna, Russia), F. Rathmann (Forschungszentrum Jülich, Germany), H. Seyfarth (Forschungszentrum Jülich, Germany | | Abstract: | Available experimental data on the exclusive $pd o pnp$ reaction at 585 MeV show a narrow peak in the proton-neutron final-state interaction region. It was supposed previously, on the basis of a phenomenological analysis of the shape of this peak, that the final spin-singlet $pn$ state provided about one third of the observed cross section. By comparing the absolute value of the measured cross section with that of $pd$ elastic scattering using the Fäldt-Wilkin extrapolation theorem, it is shown here that the $pd o pnp$ data can be explained mainly by the spin-triplet final state with a singlet admixture of a few percent. The smallness of the singlet contribution is compatible with existing $pN o pNpi$ data and the one-pion exchange mechanism of the $pd o pnp$ reaction. | | Source: | arXiv, nucl-th/0110038 | | Services: | Forum | Review | PDF | Favorites | |
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