Systematics of the H-2((p)over-right-arrow,pp)n reaction between 10.3 and 19.0 MeV

Citation
Hpg. Schieck et al., Systematics of the H-2((p)over-right-arrow,pp)n reaction between 10.3 and 19.0 MeV, FEW-BODY SY, 30(1-2), 2001, pp. 81-94
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
FEW-BODY SYSTEMS
ISSN journal
0177-7963 → ACNP
Volume
30
Issue
1-2
Year of publication
2001
Pages
81 - 94
Database
ISI
SICI code
0177-7963(2001)30:1-2<81:SOTHRB>2.0.ZU;2-Z
Abstract
The H-2((p) over right arrow, pp)n breakup reaction has been investigated i n the past at several tandem accelerator energies below 20 MeV in a number of "classical" kinematical configurations, These data are compared with pre dictions of four modern high-precision nucleon-nucleon potentials, calculat ed for H-2(n, np)n, i.e., without inclusion of the Coulomb interaction. The results show a remarkably good agreement between data and theory in some s ituations such as the final-state interaction, indicating the smallness of three-nucleon-force effects as well as the insignificance of the Coulomb fo rce for this particular configuration, Other configurations such as the sym metric space-star or quasi-free scattering are not well described, The disc repancies cannot be removed by including into three-nucleon Faddeev calcula tions the 2 pi -exchange Tucson-Melbourne three-nucleon force with the cuto ff parameter adjusted individually for each nucleon-nucleon interaction to fit the experimental triton binding energy. In contrast to quasi-free or sy mmetric space-star scattering configurations a comparison with correspondin g neutron-deuteron data shows that this discrepancy cannot be traced back t o the missing Coulomb interaction.