ANOTHER LOOK AT MESON-EXCHANGE INTERACTIONS

被引:33
作者
DEISTER, S
GARI, MF
KRUMPELMANN, W
MAHLKE, M
机构
[1] Institut für Theoretische Physik, Ruhr-Universität Bochum, Bochum, D-4630
关键词
D O I
10.1007/BF01278953
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We calculate the nucleon structure in a two-phase model, assuming for low Q2: meson dynamics, and for high Q2: quark-gluon dynamics, and find a low meson scale in accordance with electron-nucleon scattering. Using these form factors we show that with the increased importance of nucleon structure in the nucleon-nucleon interaction, higher-mass meson exchange (m > 1 GeV) becomes important. We argue that these contributions can be taken into account by a sort of closure relation, leading to contact interactions of the physical nucleons. A one-boson-exchange potential is constructed including these direct nucleon structure interactions. Implications concerning the corresponding three-nucleon interaction are also discussed. A partial-wave calculation of neutron-proton scattering is performed showing satisfactory agreement with experiment. The model has several advantages over conventional boson-exchange models.
引用
收藏
页码:1 / 36
页数:36
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